22123231131 has 16 divisors (see below), whose sum is σ = 30591712800. Its totient is φ = 14204348928.

The previous prime is 22123231111. The next prime is 22123231139. The reversal of 22123231131 is 13113232122.

It is not a de Polignac number, because 22123231131 - 2¹⁹ = 22122706843 is a prime.

It is a super-2 number, since 2×22123231131² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22123231098 and 22123231107.

It is not an unprimeable number, because it can be changed into a prime (22123231139) 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, 285726 + ... + 354803.

It is an arithmetic number, because the mean of its divisors is an integer number (1911982050).

Almost surely, 2^22123231131 is an apocalyptic number.

22123231131 is a deficient number, since it is larger than the sum of its proper divisors (8468481669).

22123231131 is a wasteful number, since it uses less digits than its factorization.

22123231131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640958.

The product of its digits is 432, while the sum is 21.

Adding to 22123231131 its reverse (13113232122), we get a palindrome (35236463253).

Subtracting from 22123231131 its reverse (13113232122), we obtain a palindrome (9009999009).

The spelling of 22123231131 in words is "twenty-two billion, one hundred twenty-three million, two hundred thirty-one thousand, one hundred thirty-one".