Q: Is 221,909 a Prime Number?
A: Yes, 221,909 is a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 221909 can be evenly divided by 1 and 221,909, with no remainder.
Since 221,909 can be divided by just 1 and 221,909, it is a prime number.