22213224531 has 48 divisors (see below), whose sum is σ = 33358696800. Its totient is φ = 14233314816.

The previous prime is 22213224493. The next prime is 22213224547. The reversal of 22213224531 is 13542231222.

It is a de Polignac number, because none of the positive numbers 2^k-22213224531 is a prime.

It is a super-2 number, since 2×22213224531² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22213224495 and 22213224504.

It is not an unprimeable number, because it can be changed into a prime (22213224431) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 20029405 + ... + 20030513.

It is an arithmetic number, because the mean of its divisors is an integer number (694972850).

Almost surely, 2^22213224531 is an apocalyptic number.

22213224531 is a deficient number, since it is larger than the sum of its proper divisors (11145472269).

22213224531 is a wasteful number, since it uses less digits than its factorization.

22213224531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1940 (or 1937 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

Adding to 22213224531 its reverse (13542231222), we get a palindrome (35755455753).

The spelling of 22213224531 in words is "twenty-two billion, two hundred thirteen million, two hundred twenty-four thousand, five hundred thirty-one".