22120851888 has 120 divisors (see below), whose sum is σ = 63415377168. Its totient is φ = 7194410496.

The previous prime is 22120851871. The next prime is 22120851901. The reversal of 22120851888 is 88815802122.

22120851888 is a `hidden beast` number, since 2 + 2 + 120 + 8 + 518 + 8 + 8 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9887506 + ... + 9889742.

Almost surely, 2^22120851888 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22120851888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31707688584).

22120851888 is an abundant number, since it is smaller than the sum of its proper divisors (41294525280).

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

22120851888 is a wasteful number, since it uses less digits than its factorization.

22120851888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3891 (or 3882 counting only the distinct ones).

The product of its (nonzero) digits is 163840, while the sum is 45.

The spelling of 22120851888 in words is "twenty-two billion, one hundred twenty million, eight hundred fifty-one thousand, eight hundred eighty-eight".