20123133122231 has 16 divisors (see below), whose sum is σ = 20776280709600. Its totient is φ = 19475903720448.

The previous prime is 20123133122203. The next prime is 20123133122233. The reversal of 20123133122231 is 13222133132102.

It is a cyclic number.

It is not a de Polignac number, because 20123133122231 - 2¹⁸ = 20123132860087 is a prime.

It is a super-2 number, since 2×20123133122231² (a number of 27 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 20123133122231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20123133122233) 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, 7541900 + ... + 9855278.

It is an arithmetic number, because the mean of its divisors is an integer number (1298517544350).

Almost surely, 2^{20123133122231} is an apocalyptic number.

20123133122231 is a deficient number, since it is larger than the sum of its proper divisors (653147587369).

20123133122231 is a wasteful number, since it uses less digits than its factorization.

20123133122231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2314658.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 20123133122231 its reverse (13222133132102), we get a palindrome (33345266254333).

The spelling of 20123133122231 in words is "twenty trillion, one hundred twenty-three billion, one hundred thirty-three million, one hundred twenty-two thousand, two hundred thirty-one".