REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM The Board of Directors and Stockholders of Simon Property Group, Inc.: We have audited Simon Property Group, Inc. and Subsidiaries’ internal control over financial reporting as of December 31, 2011  based on criteria established in Internal Control — Integrated Framework issued by the Committee of Sponsoring Organizations  of the Treadway Commission (the COSO criteria). Simon Property Group, Inc. and Subsidiaries’ management is responsible for  maintaining effective internal control over financial reporting, and for its assessment of the effectiveness of internal control  over financial reporting included in the accompanying Management’s Report on Internal Control over Financial Reporting. Our  responsibility is to express an opinion on the Company’s internal control over financial reporting based on our audit. We conducted our audit in accordance with the standards of the Public Company Accounting Oversight Board (United States).  Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal  control over financial reporting was maintained in all material respects. Our audit included obtaining an understanding of internal  control over financial reporting, assessing the risk that a material weakness exists, testing and evaluating the design and operating  effectiveness of internal control based on the assessed risk, and performing such other procedures as we considered necessary  in the circumstances. We believe that our audit provides a reasonable basis for our opinion. A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the  reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally  accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that  (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions  of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation  of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the  company are being made only in accordance with authorizations of management and directors of the company; and (3) provide  reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s  assets that could have a material effect on the financial statements. Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also,  projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate  because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate. In our opinion, Simon Property Group, Inc. and Subsidiaries maintained, in all material respects, effective internal control over  financial reporting as of December 31, 2011, based on the COSO criteria. We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States),  the consolidated balance sheets of Simon Property Group, Inc. and Subsidiaries as of December 31, 2011 and 2010, and the  related consolidated statements of operations and comprehensive income, equity and cash flows for each of the three years in  the period ended December 31, 2011 of Simon Property Group, Inc. and Subsidiaries, and our report dated February 28, 2012  expressed an unqualified opinion thereon. ERNST & YOUNG LLP Indianapolis, Indiana February 28, 2012 2011 Annual Report 29