22122255 has 16 divisors (see below), whose sum is σ = 35633664. Its totient is φ = 11719200.

The previous prime is 22122241. The next prime is 22122259. The reversal of 22122255 is 55222122.

It is not a de Polignac number, because 22122255 - 2⁵ = 22122223 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22122259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2619 + ... + 7148.

It is an arithmetic number, because the mean of its divisors is an integer number (2227104).

Almost surely, 2^22122255 is an apocalyptic number.

22122255 is a deficient number, since it is larger than the sum of its proper divisors (13511409).

22122255 is a wasteful number, since it uses less digits than its factorization.

22122255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9926.

The product of its digits is 800, while the sum is 21.

The square root of 22122255 is about 4703.4301312978. The cubic root of 22122255 is about 280.7220099193.

Adding to 22122255 its reverse (55222122), we get a palindrome (77344377).

The spelling of 22122255 in words is "twenty-two million, one hundred twenty-two thousand, two hundred fifty-five".