22533544220 has 48 divisors (see below), whose sum is σ = 51643823616. Its totient is φ = 8190600000.

The previous prime is 22533544211. The next prime is 22533544237. The reversal of 22533544220 is 2244533522.

It is a super-2 number, since 2×22533544220² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 541145 + ... + 581295.

It is an arithmetic number, because the mean of its divisors is an integer number (1075912992).

Almost surely, 2^22533544220 is an apocalyptic number.

22533544220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22533544220 is an abundant number, since it is smaller than the sum of its proper divisors (29110279396).

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

22533544220 is a wasteful number, since it uses less digits than its factorization.

22533544220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42722 (or 42720 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 32.

The spelling of 22533544220 in words is "twenty-two billion, five hundred thirty-three million, five hundred forty-four thousand, two hundred twenty".