when the area (km²) is 22721, what is the pop./ km²?
CREATE TABLE table_2252745_1 (pop__km² VARCHAR, area__km²_ VARCHAR)
SELECT pop__km² FROM table_2252745_1 WHERE area__km²_ = 22721
### Context: CREATE TABLE table_2252745_1 (pop__km² VARCHAR, area__km²_ VARCHAR) ### Question: when the area (km²) is 22721, what is the pop./ km²? ### Answer: SELECT pop__km² FROM table_2252745_1 WHERE area__km²_ = 22721