22185858220 has 24 divisors (see below), whose sum is σ = 46595809008. Its totient is φ = 8873294400.

The previous prime is 22185858203. The next prime is 22185858221. The reversal of 22185858220 is 2285858122.

It is not an unprimeable number, because it can be changed into a prime (22185858221) 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, 120810 + ... + 242830.

It is an arithmetic number, because the mean of its divisors is an integer number (1941492042).

Almost surely, 2^22185858220 is an apocalyptic number.

22185858220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22185858220 is an abundant number, since it is smaller than the sum of its proper divisors (24409950788).

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

22185858220 is a wasteful number, since it uses less digits than its factorization.

22185858220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131121 (or 131119 counting only the distinct ones).

The product of its (nonzero) digits is 204800, while the sum is 43.

The spelling of 22185858220 in words is "twenty-two billion, one hundred eighty-five million, eight hundred fifty-eight thousand, two hundred twenty".