22144441231 has 12 divisors (see below), whose sum is σ = 24356000592. Its totient is φ = 20118560000.

The previous prime is 22144441171. The next prime is 22144441261. The reversal of 22144441231 is 13214444122.

It is not a de Polignac number, because 22144441231 - 2¹¹ = 22144439183 is a prime.

It is a super-2 number, since 2×22144441231² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22144441231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22144441261) 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, 136566 + ... + 250876.

It is an arithmetic number, because the mean of its divisors is an integer number (2029666716).

Almost surely, 2^22144441231 is an apocalyptic number.

22144441231 is a deficient number, since it is larger than the sum of its proper divisors (2211559361).

22144441231 is a wasteful number, since it uses less digits than its factorization.

22144441231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115934 (or 115923 counting only the distinct ones).

The product of its digits is 6144, while the sum is 28.

Adding to 22144441231 its reverse (13214444122), we get a palindrome (35358885353).

The spelling of 22144441231 in words is "twenty-two billion, one hundred forty-four million, four hundred forty-one thousand, two hundred thirty-one".