22154032722 has 32 divisors (see below), whose sum is σ = 46273345920. Its totient is φ = 7057670400.

The previous prime is 22154032697. The next prime is 22154032723. The reversal of 22154032722 is 22723045122.

It is a self number, because there is not a number n which added to its sum of digits gives 22154032722.

It is not an unprimeable number, because it can be changed into a prime (22154032723) 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, 98904 + ... + 232572.

It is an arithmetic number, because the mean of its divisors is an integer number (1446042060).

Almost surely, 2^22154032722 is an apocalyptic number.

22154032722 is an abundant number, since it is smaller than the sum of its proper divisors (24119313198).

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

22154032722 is a wasteful number, since it uses less digits than its factorization.

22154032722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134898.

The product of its (nonzero) digits is 13440, while the sum is 30.

Adding to 22154032722 its reverse (22723045122), we get a palindrome (44877077844).

The spelling of 22154032722 in words is "twenty-two billion, one hundred fifty-four million, thirty-two thousand, seven hundred twenty-two".