321321122131 has 4 divisors (see below), whose sum is σ = 321862979592. Its totient is φ = 320779264672.

The previous prime is 321321122117. The next prime is 321321122141. The reversal of 321321122131 is 131221123123.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 321321122131 - 2¹⁷ = 321320991059 is a prime.

It is a super-2 number, since 2×321321122131² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321321122141) 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 in 3 ways as a sum of consecutive naturals, for example, 270927841 + ... + 270929026.

It is an arithmetic number, because the mean of its divisors is an integer number (80465744898).

Almost surely, 2^321321122131 is an apocalyptic number.

321321122131 is a deficient number, since it is larger than the sum of its proper divisors (541857461).

321321122131 is an equidigital number, since it uses as much as digits as its factorization.

321321122131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541857460.

The product of its digits is 432, while the sum is 22.

Adding to 321321122131 its reverse (131221123123), we get a palindrome (452542245254).

The spelling of 321321122131 in words is "three hundred twenty-one billion, three hundred twenty-one million, one hundred twenty-two thousand, one hundred thirty-one".