Q: Is 1,221,708 a Prime Number?
A: No, 1,221,708 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 1221708 can be evenly divided by 1 2 3 4 6 12 61 122 183 244 366 732 1,669 3,338 5,007 6,676 10,014 20,028 101,809 203,618 305,427 407,236 610,854 and 1,221,708, with no remainder.
Since 1,221,708 cannot be divided by just 1 and 1,221,708, it is not a prime number.