22521106672 has 40 divisors (see below), whose sum is σ = 45098557952. Its totient is φ = 10883678400.

The previous prime is 22521106669. The next prime is 22521106679. The reversal of 22521106672 is 27660112522.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22521106679) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 374263 + ... + 430249.

Almost surely, 2^22521106672 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 22521106672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22549278976).

22521106672 is an abundant number, since it is smaller than the sum of its proper divisors (22577451280).

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

22521106672 is a wasteful number, since it uses less digits than its factorization.

22521106672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56837 (or 56831 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 34.

The spelling of 22521106672 in words is "twenty-two billion, five hundred twenty-one million, one hundred six thousand, six hundred seventy-two".