22200212100 has 72 divisors (see below), whose sum is σ = 70071952608. Its totient is φ = 5381868800.

The previous prime is 22200212051. The next prime is 22200212101. The reversal of 22200212100 is 121200222.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (22200212101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3360369 + ... + 3366968.

It is an arithmetic number, because the mean of its divisors is an integer number (973221564).

Almost surely, 2^22200212100 is an apocalyptic number.

22200212100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22200212100 is an abundant number, since it is smaller than the sum of its proper divisors (47871740508).

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

22200212100 is a wasteful number, since it uses less digits than its factorization.

22200212100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6727365 (or 6727358 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 22200212100 its reverse (121200222), we get a palindrome (22321412322).

The spelling of 22200212100 in words is "twenty-two billion, two hundred million, two hundred twelve thousand, one hundred".