22113012231 has 40 divisors (see below), whose sum is σ = 34806714800. Its totient is φ = 13952010240.

The previous prime is 22113012167. The next prime is 22113012247. The reversal of 22113012231 is 13221031122.

It is not a de Polignac number, because 22113012231 - 2⁶ = 22113012167 is a prime.

It is a super-2 number, since 2×22113012231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22113013231) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1638471 + ... + 1651911.

It is an arithmetic number, because the mean of its divisors is an integer number (870167870).

Almost surely, 2^22113012231 is an apocalyptic number.

22113012231 is a deficient number, since it is larger than the sum of its proper divisors (12693702569).

22113012231 is a wasteful number, since it uses less digits than its factorization.

22113012231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14541 (or 14532 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 22113012231 its reverse (13221031122), we get a palindrome (35334043353).

The spelling of 22113012231 in words is "twenty-two billion, one hundred thirteen million, twelve thousand, two hundred thirty-one".