22122224 has 20 divisors (see below), whose sum is σ = 42948144. Its totient is φ = 11038848.

The previous prime is 22122223. The next prime is 22122241. The reversal of 22122224 is 42222122.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22122223) 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, 9284 + ... + 11420.

Almost surely, 2^22122224 is an apocalyptic number.

It is an amenable number.

22122224 is a deficient number, since it is larger than the sum of its proper divisors (20825920).

22122224 is a wasteful number, since it uses less digits than its factorization.

22122224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2792 (or 2786 counting only the distinct ones).

The product of its digits is 256, while the sum is 17.

The square root of 22122224 is about 4703.4268358294. The cubic root of 22122224 is about 280.7218787937.

Adding to 22122224 its reverse (42222122), we get a palindrome (64344346).

The spelling of 22122224 in words is "twenty-two million, one hundred twenty-two thousand, two hundred twenty-four".