321121102957 has 2 divisors, whose sum is σ = 321121102958. Its totient is φ = 321121102956.

The previous prime is 321121102903. The next prime is 321121103041. The reversal of 321121102957 is 759201121123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 229461118441 + 91659984516 = 479021^2 + 302754^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-321121102957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321121103957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160560551478 + 160560551479.

It is an arithmetic number, because the mean of its divisors is an integer number (160560551479).

Almost surely, 2^321121102957 is an apocalyptic number.

It is an amenable number.

321121102957 is a deficient number, since it is larger than the sum of its proper divisors (1).

321121102957 is an equidigital number, since it uses as much as digits as its factorization.

321121102957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7560, while the sum is 34.

The spelling of 321121102957 in words is "three hundred twenty-one billion, one hundred twenty-one million, one hundred two thousand, nine hundred fifty-seven".