22222211100 has 72 divisors (see below), whose sum is σ = 66034033968. Its totient is φ = 5765760000.

The previous prime is 22222211087. The next prime is 22222211117. The reversal of 22222211100 is 111222222.

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

It is a nialpdrome in base 10.

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 22222211100.

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, 989901 + ... + 1012100.

Almost surely, 2^22222211100 is an apocalyptic number.

22222211100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22222211100 is an abundant number, since it is smaller than the sum of its proper divisors (43811822868).

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

22222211100 is a wasteful number, since it uses less digits than its factorization.

22222211100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2002055 (or 2002048 counting only the distinct ones).

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

Adding to 22222211100 its reverse (111222222), we get a palindrome (22333433322).

The spelling of 22222211100 in words is "twenty-two billion, two hundred twenty-two million, two hundred eleven thousand, one hundred".