22212100100 has 36 divisors (see below), whose sum is σ = 50737117200. Its totient is φ = 8417216160.

The previous prime is 22212100093. The next prime is 22212100111. The reversal of 22212100100 is 100121222.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5843390 + ... + 5847189.

Almost surely, 2^22212100100 is an apocalyptic number.

22212100100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22212100100 is an abundant number, since it is smaller than the sum of its proper divisors (28525017100).

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

22212100100 is a wasteful number, since it uses less digits than its factorization.

22212100100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11690612 (or 11690605 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 22212100100 its reverse (100121222), we get a palindrome (22312221322).

The spelling of 22212100100 in words is "twenty-two billion, two hundred twelve million, one hundred thousand, one hundred".