22401212100 has 36 divisors (see below), whose sum is σ = 64814174544. Its totient is φ = 5973656480.

The previous prime is 22401212077. The next prime is 22401212101. The reversal of 22401212100 is 121210422.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 22401212100.

It is not an unprimeable number, because it can be changed into a prime (22401212101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37335054 + ... + 37335653.

Almost surely, 2^22401212100 is an apocalyptic number.

22401212100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22401212100 is an abundant number, since it is smaller than the sum of its proper divisors (42412962444).

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

22401212100 is a wasteful number, since it uses less digits than its factorization.

22401212100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74670724 (or 74670717 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 22401212100 its reverse (121210422), we get a palindrome (22522422522).

The spelling of 22401212100 in words is "twenty-two billion, four hundred one million, two hundred twelve thousand, one hundred".