22101122008 has 64 divisors (see below), whose sum is σ = 48058666560. Its totient is φ = 9332361216.

The previous prime is 22101121979. The next prime is 22101122009. The reversal of 22101122008 is 80022110122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22101122009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4956516 + ... + 4960972.

It is an arithmetic number, because the mean of its divisors is an integer number (750916665).

Almost surely, 2^22101122008 is an apocalyptic number.

22101122008 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22101122008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24029333280).

22101122008 is an abundant number, since it is smaller than the sum of its proper divisors (25957544552).

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

22101122008 is a wasteful number, since it uses less digits than its factorization.

22101122008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5756 (or 5752 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

The spelling of 22101122008 in words is "twenty-two billion, one hundred one million, one hundred twenty-two thousand, eight".