22044081 has 16 divisors (see below), whose sum is σ = 30412800. Its totient is φ = 14194128.

The previous prime is 22044073. The next prime is 22044083. The reversal of 22044081 is 18044022.

It is not a de Polignac number, because 22044081 - 2³ = 22044073 is a prime.

It is a super-2 number, since 2×22044081² = 971883014269122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22044083) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10150 + ... + 12128.

It is an arithmetic number, because the mean of its divisors is an integer number (1900800).

Almost surely, 2^22044081 is an apocalyptic number.

It is an amenable number.

22044081 is a deficient number, since it is larger than the sum of its proper divisors (8368719).

22044081 is a wasteful number, since it uses less digits than its factorization.

22044081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2108.

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 22044081 is about 4695.1124587170. The cubic root of 22044081 is about 280.3909547192.

The spelling of 22044081 in words is "twenty-two million, forty-four thousand, eighty-one".