323111231221 has 16 divisors (see below), whose sum is σ = 344896579584. Its totient is φ = 301635823104.

The previous prime is 323111231173. The next prime is 323111231239. The reversal of 323111231221 is 122132111323.

It is not a de Polignac number, because 323111231221 - 2²⁷ = 322977013493 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 323111231192 and 323111231201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (323111231621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10008121 + ... + 10040353.

It is an arithmetic number, because the mean of its divisors is an integer number (21556036224).

Almost surely, 2^323111231221 is an apocalyptic number.

It is an amenable number.

323111231221 is a deficient number, since it is larger than the sum of its proper divisors (21785348363).

323111231221 is a wasteful number, since it uses less digits than its factorization.

323111231221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37020.

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

Adding to 323111231221 its reverse (122132111323), we get a palindrome (445243342544).

The spelling of 323111231221 in words is "three hundred twenty-three billion, one hundred eleven million, two hundred thirty-one thousand, two hundred twenty-one".