22213123231 has 12 divisors (see below), whose sum is σ = 25319228520. Its totient is φ = 19425238560.

The previous prime is 22213123199. The next prime is 22213123259. The reversal of 22213123231 is 13232131222.

It is not a de Polignac number, because 22213123231 - 2⁵ = 22213123199 is a prime.

It is a super-2 number, since 2×22213123231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22213120231) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3455700 + ... + 3462121.

It is an arithmetic number, because the mean of its divisors is an integer number (2109935710).

Almost surely, 2^22213123231 is an apocalyptic number.

22213123231 is a deficient number, since it is larger than the sum of its proper divisors (3106105289).

22213123231 is a wasteful number, since it uses less digits than its factorization.

22213123231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6917866 (or 6917853 counting only the distinct ones).

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

Adding to 22213123231 its reverse (13232131222), we get a palindrome (35445254453).

The spelling of 22213123231 in words is "twenty-two billion, two hundred thirteen million, one hundred twenty-three thousand, two hundred thirty-one".