22118901 has 16 divisors (see below), whose sum is σ = 33936000. Its totient is φ = 12552768.

The previous prime is 22118891. The next prime is 22118947. The reversal of 22118901 is 10981122.

It is not a de Polignac number, because 22118901 - 2⁷ = 22118773 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22118951) 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, 406 + ... + 6663.

It is an arithmetic number, because the mean of its divisors is an integer number (2121000).

Almost surely, 2^22118901 is an apocalyptic number.

22118901 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22118901 is a deficient number, since it is larger than the sum of its proper divisors (11817099).

22118901 is a wasteful number, since it uses less digits than its factorization.

22118901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7228.

The product of its (nonzero) digits is 288, while the sum is 24.

The square root of 22118901 is about 4703.0735694862. The cubic root of 22118901 is about 280.7078222577.

The spelling of 22118901 in words is "twenty-two million, one hundred eighteen thousand, nine hundred one".