22122544 has 20 divisors (see below), whose sum is σ = 43104880. Its totient is φ = 10998720.

The previous prime is 22122539. The next prime is 22122547. The reversal of 22122544 is 44522122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22122547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 924 + ... + 6715.

It is an arithmetic number, because the mean of its divisors is an integer number (2155244).

Almost surely, 2^22122544 is an apocalyptic number.

It is an amenable number.

22122544 is a deficient number, since it is larger than the sum of its proper divisors (20982336).

22122544 is a wasteful number, since it uses less digits than its factorization.

22122544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7828 (or 7822 counting only the distinct ones).

The product of its digits is 1280, while the sum is 22.

The square root of 22122544 is about 4703.4608534567. The cubic root of 22122544 is about 280.7232323430.

Adding to 22122544 its reverse (44522122), we get a palindrome (66644666).

The spelling of 22122544 in words is "twenty-two million, one hundred twenty-two thousand, five hundred forty-four".