22211312100 has 36 divisors (see below), whose sum is σ = 64264730544. Its totient is φ = 5923016480.

The previous prime is 22211312099. The next prime is 22211312147. The reversal of 22211312100 is 121311222.

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 22211312100.

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, 37018554 + ... + 37019153.

It is an arithmetic number, because the mean of its divisors is an integer number (1785131404).

Almost surely, 2^22211312100 is an apocalyptic number.

22211312100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22211312100 is an abundant number, since it is smaller than the sum of its proper divisors (42053418444).

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

22211312100 is a wasteful number, since it uses less digits than its factorization.

22211312100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74037724 (or 74037717 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 22211312100 its reverse (121311222), we get a palindrome (22332623322).

The spelling of 22211312100 in words is "twenty-two billion, two hundred eleven million, three hundred twelve thousand, one hundred".