22244312231 has 4 divisors (see below), whose sum is σ = 22448388600. Its totient is φ = 22040235864.

The previous prime is 22244312173. The next prime is 22244312239. The reversal of 22244312231 is 13221344222.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13221344222 = 2 ⋅6610672111.

It is a cyclic number.

It is not a de Polignac number, because 22244312231 - 2³⁴ = 5064443047 is a prime.

It is a super-2 number, since 2×22244312231² (a number of 21 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 22244312231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22244312239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102038021 + ... + 102038238.

It is an arithmetic number, because the mean of its divisors is an integer number (5612097150).

Almost surely, 2^22244312231 is an apocalyptic number.

22244312231 is a deficient number, since it is larger than the sum of its proper divisors (204076369).

22244312231 is a wasteful number, since it uses less digits than its factorization.

22244312231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204076368.

The product of its digits is 4608, while the sum is 26.

Adding to 22244312231 its reverse (13221344222), we get a palindrome (35465656453).

The spelling of 22244312231 in words is "twenty-two billion, two hundred forty-four million, three hundred twelve thousand, two hundred thirty-one".