22021036 has 12 divisors (see below), whose sum is σ = 39780160. Its totient is φ = 10655280.

The previous prime is 22021009. The next prime is 22021049. The reversal of 22021036 is 63012022.

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, 88671 + ... + 88918.

Almost surely, 2^22021036 is an apocalyptic number.

It is an amenable number.

22021036 is a deficient number, since it is larger than the sum of its proper divisors (17759124).

22021036 is a wasteful number, since it uses less digits than its factorization.

22021036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177624 (or 177622 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 22021036 is about 4692.6576691679. The cubic root of 22021036 is about 280.2932132509.

Adding to 22021036 its reverse (63012022), we get a palindrome (85033058).

The spelling of 22021036 in words is "twenty-two million, twenty-one thousand, thirty-six".