3121333322321 has 2 divisors, whose sum is σ = 3121333322322. Its totient is φ = 3121333322320.

The previous prime is 3121333322291. The next prime is 3121333322357. The reversal of 3121333322321 is 1232233331213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3025164490000 + 96168832321 = 1739300^2 + 310111^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3121333322321 is a prime.

It is not a weakly prime, because it can be changed into another prime (3121333322221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1560666661160 + 1560666661161.

It is an arithmetic number, because the mean of its divisors is an integer number (1560666661161).

Almost surely, 2^{3121333322321} is an apocalyptic number.

It is an amenable number.

3121333322321 is a deficient number, since it is larger than the sum of its proper divisors (1).

3121333322321 is an equidigital number, since it uses as much as digits as its factorization.

3121333322321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11664, while the sum is 29.

Adding to 3121333322321 its reverse (1232233331213), we get a palindrome (4353566653534).

The spelling of 3121333322321 in words is "three trillion, one hundred twenty-one billion, three hundred thirty-three million, three hundred twenty-two thousand, three hundred twenty-one".