13231122111 has 12 divisors (see below), whose sum is σ = 19173077040. Its totient is φ = 8792383680.

The previous prime is 13231122103. The next prime is 13231122127. The reversal of 13231122111 is 11122113231.

13231122111 is a `hidden beast` number, since 132 + 311 + 221 + 1 + 1 = 666.

It is not a de Polignac number, because 13231122111 - 2³ = 13231122103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13231122211) 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 11 ways as a sum of consecutive naturals, for example, 2360746 + ... + 2366343.

It is an arithmetic number, because the mean of its divisors is an integer number (1597756420).

Almost surely, 2^13231122111 is an apocalyptic number.

13231122111 is a deficient number, since it is larger than the sum of its proper divisors (5941954929).

13231122111 is a wasteful number, since it uses less digits than its factorization.

13231122111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4727406 (or 4727403 counting only the distinct ones).

The product of its digits is 72, while the sum is 18.

Adding to 13231122111 its reverse (11122113231), we get a palindrome (24353235342).

The spelling of 13231122111 in words is "thirteen billion, two hundred thirty-one million, one hundred twenty-two thousand, one hundred eleven".