Name the 2011 gdp for 65 rank world
CREATE TABLE "table1_2248784_3" (
  "rank_subcontinent" real,
  "rank_asia" real,
  "rank_world" real,
  "country" text,
  "2011_gdp_ppp_billions_of_usd" text
);
SELECT "2011_gdp_ppp_billions_of_usd" FROM "table1_2248784_3" WHERE "rank_world"=65;