22221922 has 16 divisors (see below), whose sum is σ = 33929280. Its totient is φ = 10913872.

The previous prime is 22221911. The next prime is 22221949. The reversal of 22221922 is 22912222.

It is a junction number, because it is equal to n+sod(n) for n = 22221893 and 22221902.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43404 + ... + 43912.

It is an arithmetic number, because the mean of its divisors is an integer number (2120580).

Almost surely, 2^22221922 is an apocalyptic number.

22221922 is a deficient number, since it is larger than the sum of its proper divisors (11707358).

22221922 is a wasteful number, since it uses less digits than its factorization.

22221922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 857.

The product of its digits is 576, while the sum is 22.

The square root of 22221922 is about 4714.0133644274. The cubic root of 22221922 is about 281.1429556754.

It can be divided in two parts, 222 and 21922, that multiplied together give a palindrome (4866684).

The spelling of 22221922 in words is "twenty-two million, two hundred twenty-one thousand, nine hundred twenty-two".