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_22570 ( "Series episode" real, "Season episode" real, "Title" text, "Directed by" text, "Written by" text, "Original air date" text, "Viewers (millions)" text )

### Question ###
What is the show episode number of the episode that reached 1.215 millions views?

### Accurate SQL ###

SELECT MIN("Series episode") FROM table_22570 WHERE "Viewers (millions)" = '1.215'