321031222130051 has 2 divisors, whose sum is σ = 321031222130052. Its totient is φ = 321031222130050.

The previous prime is 321031222130039. The next prime is 321031222130141. The reversal of 321031222130051 is 150031222130123.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 321031222130051 - 2¹⁸ = 321031221867907 is a prime.

It is a super-2 number, since 2×321031222130051² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 321031222130051.

It is not a weakly prime, because it can be changed into another prime (321031222130951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160515611065025 + 160515611065026.

It is an arithmetic number, because the mean of its divisors is an integer number (160515611065026).

Almost surely, 2^{321031222130051} is an apocalyptic number.

321031222130051 is a deficient number, since it is larger than the sum of its proper divisors (1).

321031222130051 is an equidigital number, since it uses as much as digits as its factorization.

321031222130051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 26.

Adding to 321031222130051 its reverse (150031222130123), we get a palindrome (471062444260174).

The spelling of 321031222130051 in words is "three hundred twenty-one trillion, thirty-one billion, two hundred twenty-two million, one hundred thirty thousand, fifty-one".