22720556100 has 144 divisors (see below), whose sum is σ = 75933014976. Its totient is φ = 5184000000.

The previous prime is 22720556077. The next prime is 22720556107. The reversal of 22720556100 is 165502722.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (22720556107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 146401 + ... + 258600.

It is an arithmetic number, because the mean of its divisors is an integer number (527312604).

Almost surely, 2^22720556100 is an apocalyptic number.

22720556100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22720556100 is an abundant number, since it is smaller than the sum of its proper divisors (53212458876).

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

22720556100 is a wasteful number, since it uses less digits than its factorization.

22720556100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405046 (or 405039 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 30.

The spelling of 22720556100 in words is "twenty-two billion, seven hundred twenty million, five hundred fifty-six thousand, one hundred".