22172199 has 32 divisors (see below), whose sum is σ = 36080640. Its totient is φ = 11822592.

The previous prime is 22172191. The next prime is 22172209. The reversal of 22172199 is 99127122.

It is not a de Polignac number, because 22172199 - 2³ = 22172191 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22172191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 61582 + ... + 61940.

It is an arithmetic number, because the mean of its divisors is an integer number (1127520).

Almost surely, 2^22172199 is an apocalyptic number.

22172199 is a deficient number, since it is larger than the sum of its proper divisors (13908441).

22172199 is a wasteful number, since it uses less digits than its factorization.

22172199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 559.

The product of its digits is 4536, while the sum is 33.

The square root of 22172199 is about 4708.7364547190. The cubic root of 22172199 is about 280.9331071802.

The spelling of 22172199 in words is "twenty-two million, one hundred seventy-two thousand, one hundred ninety-nine".