22101808 has 20 divisors (see below), whose sum is σ = 42959800. Its totient is φ = 11015424.

The previous prime is 22101773. The next prime is 22101809. The reversal of 22101808 is 80810122.

It is not an unprimeable number, because it can be changed into a prime (22101809) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3343 + ... + 7441.

It is an arithmetic number, because the mean of its divisors is an integer number (2147990).

Almost surely, 2^22101808 is an apocalyptic number.

It is an amenable number.

22101808 is a deficient number, since it is larger than the sum of its proper divisors (20857992).

22101808 is a wasteful number, since it uses less digits than its factorization.

22101808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4444 (or 4438 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 22.

The square root of 22101808 is about 4701.2560023891. The cubic root of 22101808 is about 280.6354953474.

The spelling of 22101808 in words is "twenty-two million, one hundred one thousand, eight hundred eight".