CREATE TABLE "table1_22265225_1" (
  "no_in_series" text,
  "no_in_season" text,
  "title" text,
  "directed_by" text,
  "written_by" text,
  "original_air_date" text,
  "production_code" text,
  "u_s_viewers_millions" text
);

Question: What episode number in the series was "igo nuclear"?
SQL: SELECT "no_in_season" FROM "table1_22265225_1" WHERE "title"='\"iGo Nuclear\"';

Question: How many times was u.s. Viewers listed for episode 36 in the series?
SQL: SELECT COUNT("u_s_viewers_millions") FROM "table1_22265225_1" WHERE "no_in_series"='36';

Question: How many million U.s. Viewers watched episode 12 in the season?
SQL: SELECT "u_s_viewers_millions" FROM "table1_22265225_1" WHERE "no_in_season"='12';

Question: What day did the episode with a production code of 218 originally air?
SQL: SELECT "original_air_date" FROM "table1_22265225_1" WHERE "production_code"='218';

Question: How many episodes were listed as number 29 in the series?
SQL: SELECT COUNT("no_in_season") FROM "table1_22265225_1" WHERE "no_in_series"='29';