22112010090 has 24 divisors (see below), whose sum is σ = 57491226468. Its totient is φ = 5896536000.

The previous prime is 22112010077. The next prime is 22112010091. The reversal of 22112010090 is 9001021122.

It can be written as a sum of positive squares in 2 ways, for example, as 21627525969 + 484484121 = 147063^2 + 22011^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (22112010091) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 122844411 + ... + 122844590.

Almost surely, 2^22112010090 is an apocalyptic number.

22112010090 is an abundant number, since it is smaller than the sum of its proper divisors (35379216378).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22112010090 is a wasteful number, since it uses less digits than its factorization.

22112010090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245689014 (or 245689011 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The spelling of 22112010090 in words is "twenty-two billion, one hundred twelve million, ten thousand, ninety".