Q: Is 2,221,921 a Prime Number?
A: No, 2,221,921 is not a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 2221921 can be evenly divided by 1 13 67 871 2,551 33,163 170,917 and 2,221,921, with no remainder.
Since 2,221,921 cannot be divided by just 1 and 2,221,921, it is not a prime number.