22144404232 has 32 divisors (see below), whose sum is σ = 43972689600. Its totient is φ = 10432724544.

The previous prime is 22144404169. The next prime is 22144404253. The reversal of 22144404232 is 23240444122.

It is a self number, because there is not a number n which added to its sum of digits gives 22144404232.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 885807 + ... + 910462.

It is an arithmetic number, because the mean of its divisors is an integer number (1374146550).

Almost surely, 2^22144404232 is an apocalyptic number.

It is an amenable number.

22144404232 is a deficient number, since it is larger than the sum of its proper divisors (21828285368).

22144404232 is a wasteful number, since it uses less digits than its factorization.

22144404232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1796365 (or 1796361 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 28.

Adding to 22144404232 its reverse (23240444122), we get a palindrome (45384848354).

The spelling of 22144404232 in words is "twenty-two billion, one hundred forty-four million, four hundred four thousand, two hundred thirty-two".