Q: Is 1,221,108 a Prime Number?
A: No, 1,221,108 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 1221108 can be evenly divided by 1 2 3 4 6 7 12 14 21 28 42 84 14,537 29,074 43,611 58,148 87,222 101,759 174,444 203,518 305,277 407,036 610,554 and 1,221,108, with no remainder.
Since 1,221,108 cannot be divided by just 1 and 1,221,108, it is not a prime number.