22202012100 has 144 divisors (see below), whose sum is σ = 64795852800. Its totient is φ = 5869353600.

The previous prime is 22202012099. The next prime is 22202012197. The reversal of 22202012100 is 121020222.

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

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 22864615 + ... + 22865585.

It is an arithmetic number, because the mean of its divisors is an integer number (449971200).

Almost surely, 2^22202012100 is an apocalyptic number.

22202012100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22202012100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32397926400).

22202012100 is an abundant number, since it is smaller than the sum of its proper divisors (42593840700).

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

22202012100 is a wasteful number, since it uses less digits than its factorization.

22202012100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1570 (or 1563 counting only the distinct ones).

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

Adding to 22202012100 its reverse (121020222), we get a palindrome (22323032322).

The spelling of 22202012100 in words is "twenty-two billion, two hundred two million, twelve thousand, one hundred".