222120311100 has 72 divisors (see below), whose sum is σ = 642718998768. Its totient is φ = 59227392000.

The previous prime is 222120311099. The next prime is 222120311123. The reversal of 222120311100 is 1113021222.

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 222120311100.

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, 5500182 + ... + 5540418.

Almost surely, 2^222120311100 is an apocalyptic number.

222120311100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222120311100 is an abundant number, since it is smaller than the sum of its proper divisors (420598687668).

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

222120311100 is a wasteful number, since it uses less digits than its factorization.

222120311100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58655 (or 58648 counting only the distinct ones).

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

Adding to 222120311100 its reverse (1113021222), we get a palindrome (223233332322).

The spelling of 222120311100 in words is "two hundred twenty-two billion, one hundred twenty million, three hundred eleven thousand, one hundred".