22144243131 has 16 divisors (see below), whose sum is σ = 33606441120. Its totient is φ = 14402759040.

The previous prime is 22144243127. The next prime is 22144243133. The reversal of 22144243131 is 13134244122.

22144243131 is a `hidden beast` number, since 221 + 4 + 4 + 2 + 431 + 3 + 1 = 666.

It is not a de Polignac number, because 22144243131 - 2² = 22144243127 is a prime.

It is a super-2 number, since 2×22144243131² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 22144243095 and 22144243104.

It is not an unprimeable number, because it can be changed into a prime (22144243133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10000810 + ... + 10003023.

It is an arithmetic number, because the mean of its divisors is an integer number (2100402570).

Almost surely, 2^22144243131 is an apocalyptic number.

22144243131 is a deficient number, since it is larger than the sum of its proper divisors (11462197989).

22144243131 is a wasteful number, since it uses less digits than its factorization.

22144243131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20003883 (or 20003877 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

Adding to 22144243131 its reverse (13134244122), we get a palindrome (35278487253).

Subtracting from 22144243131 its reverse (13134244122), we obtain a palindrome (9009999009).

The spelling of 22144243131 in words is "twenty-two billion, one hundred forty-four million, two hundred forty-three thousand, one hundred thirty-one".