3321012991 has 2 divisors, whose sum is σ = 3321012992. Its totient is φ = 3321012990.

The previous prime is 3321012979. The next prime is 3321013013. The reversal of 3321012991 is 1992101233.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3321012991 is a prime.

It is a super-2 number, since 2×3321012991² = 22058254572781532162, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3321012911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1660506495 + 1660506496.

It is an arithmetic number, because the mean of its divisors is an integer number (1660506496).

Almost surely, 2^3321012991 is an apocalyptic number.

3321012991 is a deficient number, since it is larger than the sum of its proper divisors (1).

3321012991 is an equidigital number, since it uses as much as digits as its factorization.

3321012991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2916, while the sum is 31.

The square root of 3321012991 is about 57628.2308508599. The cubic root of 3321012991 is about 1491.9588953773.

The spelling of 3321012991 in words is "three billion, three hundred twenty-one million, twelve thousand, nine hundred ninety-one".