22431221124 has 48 divisors (see below), whose sum is σ = 56440388928. Its totient is φ = 6892760448.

The previous prime is 22431221101. The next prime is 22431221147. The reversal of 22431221124 is 42112213422.

It is an interprime number because it is at equal distance from previous prime (22431221101) and next prime (22431221147).

It is a super-2 number, since 2×22431221124² (a number of 22 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 22431221094 and 22431221103.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23119 + ... + 213065.

It is an arithmetic number, because the mean of its divisors is an integer number (1175841436).

Almost surely, 2^22431221124 is an apocalyptic number.

It is an amenable number.

22431221124 is an abundant number, since it is smaller than the sum of its proper divisors (34009167804).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22431221124 is a wasteful number, since it uses less digits than its factorization.

22431221124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190724 (or 190722 counting only the distinct ones).

The product of its digits is 1536, while the sum is 24.

Adding to 22431221124 its reverse (42112213422), we get a palindrome (64543434546).

The spelling of 22431221124 in words is "twenty-two billion, four hundred thirty-one million, two hundred twenty-one thousand, one hundred twenty-four".