22501213200 has 90 divisors (see below), whose sum is σ = 78085472634. Its totient is φ = 6000322560.

The previous prime is 22501213193. The next prime is 22501213213. The reversal of 22501213200 is 231210522.

22501213200 is a `hidden beast` number, since 2 + 250 + 1 + 213 + 200 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 370485504 + 22130727696 = 19248^2 + 148764^2 .

It is a tau number, because it is divible by the number of its divisors (90).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3121569 + ... + 3128768.

Almost surely, 2^22501213200 is an apocalyptic number.

22501213200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22501213200 is an abundant number, since it is smaller than the sum of its proper divisors (55584259434).

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

22501213200 is a wasteful number, since it uses less digits than its factorization.

22501213200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6250361 (or 6250347 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

Adding to 22501213200 its reverse (231210522), we get a palindrome (22732423722).

The spelling of 22501213200 in words is "twenty-two billion, five hundred one million, two hundred thirteen thousand, two hundred".