22231123231 has 16 divisors (see below), whose sum is σ = 22776779520. Its totient is φ = 21694003200.

The previous prime is 22231123199. The next prime is 22231123267. The reversal of 22231123231 is 13232113222.

It is a cyclic number.

It is not a de Polignac number, because 22231123231 - 2⁵ = 22231123199 is a prime.

It is a super-2 number, since 2×22231123231² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22231123331) 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, 2119506 + ... + 2129968.

It is an arithmetic number, because the mean of its divisors is an integer number (1423548720).

Almost surely, 2^22231123231 is an apocalyptic number.

22231123231 is a deficient number, since it is larger than the sum of its proper divisors (545656289).

22231123231 is a wasteful number, since it uses less digits than its factorization.

22231123231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10866.

The product of its digits is 864, while the sum is 22.

Adding to 22231123231 its reverse (13232113222), we get a palindrome (35463236453).

It can be divided in two parts, 222311 and 23231, that added together give a palindrome (245542).

The spelling of 22231123231 in words is "twenty-two billion, two hundred thirty-one million, one hundred twenty-three thousand, two hundred thirty-one".