22121101188 has 48 divisors (see below), whose sum is σ = 57361402560. Its totient is φ = 7372363392.

The previous prime is 22121101187. The next prime is 22121101217. The reversal of 22121101188 is 88110112122.

It is a super-2 number, since 2×22121101188² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (22121101187) 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, 712395 + ... + 742797.

It is an arithmetic number, because the mean of its divisors is an integer number (1195029220).

Almost surely, 2^22121101188 is an apocalyptic number.

It is an amenable number.

22121101188 is an abundant number, since it is smaller than the sum of its proper divisors (35240301372).

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

22121101188 is a wasteful number, since it uses less digits than its factorization.

22121101188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37153 (or 37145 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 27.

The spelling of 22121101188 in words is "twenty-two billion, one hundred twenty-one million, one hundred one thousand, one hundred eighty-eight".