22111331100 has 72 divisors (see below), whose sum is σ = 64206650928. Its totient is φ = 5875046400.

The previous prime is 22111331087. The next prime is 22111331117. The reversal of 22111331100 is 113311122.

It is a happy number.

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

It is a zygodrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 22111331100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49941 + ... + 216140.

Almost surely, 2^22111331100 is an apocalyptic number.

22111331100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22111331100 is an abundant number, since it is smaller than the sum of its proper divisors (42095319828).

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

22111331100 is a wasteful number, since it uses less digits than its factorization.

22111331100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266375 (or 266368 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 22111331100 its reverse (113311122), we get a palindrome (22224642222).

The spelling of 22111331100 in words is "twenty-two billion, one hundred eleven million, three hundred thirty-one thousand, one hundred".