321322121231 has 2 divisors, whose sum is σ = 321322121232. Its totient is φ = 321322121230.

The previous prime is 321322121203. The next prime is 321322121273. The reversal of 321322121231 is 132121223123.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-321322121231 is a prime.

It is a super-2 number, since 2×321322121231² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 321322121197 and 321322121206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321324121231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160661060615 + 160661060616.

It is an arithmetic number, because the mean of its divisors is an integer number (160661060616).

Almost surely, 2^321322121231 is an apocalyptic number.

321322121231 is a deficient number, since it is larger than the sum of its proper divisors (1).

321322121231 is an equidigital number, since it uses as much as digits as its factorization.

321322121231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 864, while the sum is 23.

Adding to 321322121231 its reverse (132121223123), we get a palindrome (453443344354).

The spelling of 321322121231 in words is "three hundred twenty-one billion, three hundred twenty-two million, one hundred twenty-one thousand, two hundred thirty-one".