22204688220 has 288 divisors, whose sum is σ = 81776358720. Its totient is φ = 4968691200.

The previous prime is 22204688161. The next prime is 22204688243. The reversal of 22204688220 is 2288640222.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 836350 + ... + 862490.

It is an arithmetic number, because the mean of its divisors is an integer number (283945690).

Almost surely, 2^22204688220 is an apocalyptic number.

22204688220 is a gapful number since it is divisible by the number (20) 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 22204688220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40888179360).

22204688220 is an abundant number, since it is smaller than the sum of its proper divisors (59571670500).

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

22204688220 is a wasteful number, since it uses less digits than its factorization.

22204688220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26194 (or 26175 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 36.

The spelling of 22204688220 in words is "twenty-two billion, two hundred four million, six hundred eighty-eight thousand, two hundred twenty".