13231022111 has 4 divisors (see below), whose sum is σ = 13232281272. Its totient is φ = 13229762952.

The previous prime is 13231022099. The next prime is 13231022117. The reversal of 13231022111 is 11122013231.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13231022111 is a prime.

It is a super-2 number, since 2×13231022111² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13231022111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13231022117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 613685 + ... + 634878.

It is an arithmetic number, because the mean of its divisors is an integer number (3308070318).

Almost surely, 2^13231022111 is an apocalyptic number.

13231022111 is a deficient number, since it is larger than the sum of its proper divisors (1259161).

13231022111 is a wasteful number, since it uses less digits than its factorization.

13231022111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1259160.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 13231022111 its reverse (11122013231), we get a palindrome (24353035342).

The spelling of 13231022111 in words is "thirteen billion, two hundred thirty-one million, twenty-two thousand, one hundred eleven".