222112112100 has 36 divisors (see below), whose sum is σ = 642644378544. Its totient is φ = 59229896480.

The previous prime is 222112112081. The next prime is 222112112107. The reversal of 222112112100 is 1211211222.

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 222112112100.

It is not an unprimeable number, because it can be changed into a prime (222112112107) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 370186554 + ... + 370187153.

Almost surely, 2^222112112100 is an apocalyptic number.

222112112100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222112112100 is an abundant number, since it is smaller than the sum of its proper divisors (420532266444).

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

222112112100 is a wasteful number, since it uses less digits than its factorization.

222112112100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 740373724 (or 740373717 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 222112112100 its reverse (1211211222), we get a palindrome (223323323322).

The spelling of 222112112100 in words is "two hundred twenty-two billion, one hundred twelve million, one hundred twelve thousand, one hundred".