Q: Is 221,891 a Prime Number?
A: Yes, 221,891 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 221891 can be evenly divided by 1 and 221,891, with no remainder.
Since 221,891 can be divided by just 1 and 221,891, it is a prime number.