22403121231 has 16 divisors (see below), whose sum is σ = 31426401888. Its totient is φ = 14177318400.

The previous prime is 22403121211. The next prime is 22403121241. The reversal of 22403121231 is 13212130422.

It is not a de Polignac number, because 22403121231 - 2²³ = 22394732623 is a prime.

It is a super-2 number, since 2×22403121231² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22403121198 and 22403121207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22403121211) 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, 2456790 + ... + 2465891.

It is an arithmetic number, because the mean of its divisors is an integer number (1964150118).

Almost surely, 2^22403121231 is an apocalyptic number.

22403121231 is a deficient number, since it is larger than the sum of its proper divisors (9023280657).

22403121231 is a wasteful number, since it uses less digits than its factorization.

22403121231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4922762.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 22403121231 its reverse (13212130422), we get a palindrome (35615251653).

The spelling of 22403121231 in words is "twenty-two billion, four hundred three million, one hundred twenty-one thousand, two hundred thirty-one".