22165211824 has 80 divisors (see below), whose sum is σ = 51728078080. Its totient is φ = 8988122880.

The previous prime is 22165211807. The next prime is 22165211899. The reversal of 22165211824 is 42811256122.

It is a self number, because there is not a number n which added to its sum of digits gives 22165211824.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1809079 + ... + 1821289.

It is an arithmetic number, because the mean of its divisors is an integer number (646600976).

Almost surely, 2^22165211824 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22165211824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25864039040).

22165211824 is an abundant number, since it is smaller than the sum of its proper divisors (29562866256).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22165211824 is a wasteful number, since it uses less digits than its factorization.

22165211824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13098 (or 13092 counting only the distinct ones).

The product of its digits is 15360, while the sum is 34.

Adding to 22165211824 its reverse (42811256122), we get a palindrome (64976467946).

The spelling of 22165211824 in words is "twenty-two billion, one hundred sixty-five million, two hundred eleven thousand, eight hundred twenty-four".