What's the total (in million €) in the region where PPP is 21779 million €?
CREATE TABLE "table1_2293510_1" (
  "region_nuts_2006" text,
  "total_million" text,
  "per_capita_2005" real,
  "ppp_million" real,
  "ppp_per_capita" real,
  "pct_of_eu_average_gdp_ppp" text
);
SELECT "total_million" FROM "table1_2293510_1" WHERE "ppp_million"=21779;