Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_24961421_1 ( season__number VARCHAR, us_viewers__millions_ VARCHAR )

### Question ###
What number in the season was the episode with 12.23 million viewers?

### Accurate SQL ###

SELECT season__number FROM table_24961421_1 WHERE us_viewers__millions_ = "12.23"