22221956 has 12 divisors (see below), whose sum is σ = 40579392. Its totient is φ = 10627848.

The previous prime is 22221949. The next prime is 22221971. The reversal of 22221956 is 65912222.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120680 + ... + 120863.

It is an arithmetic number, because the mean of its divisors is an integer number (3381616).

Almost surely, 2^22221956 is an apocalyptic number.

It is an amenable number.

22221956 is a deficient number, since it is larger than the sum of its proper divisors (18357436).

22221956 is a wasteful number, since it uses less digits than its factorization.

22221956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241570 (or 241568 counting only the distinct ones).

The product of its digits is 4320, while the sum is 29.

The square root of 22221956 is about 4714.0169706950. The cubic root of 22221956 is about 281.1430990602.

The spelling of 22221956 in words is "twenty-two million, two hundred twenty-one thousand, nine hundred fifty-six".