222111212100200 has 96 divisors (see below), whose sum is σ = 535449520834200. Its totient is φ = 85582772674560.

The previous prime is 222111212100191. The next prime is 222111212100259. The reversal of 222111212100200 is 2001212111222.

It can be written as a sum of positive squares in 12 ways, for example, as 7646961518596 + 214464250581604 = 2765314^2 + 14644598^2 .

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, 41709197 + ... + 46731996.

Almost surely, 2^{222111212100200} is an apocalyptic number.

222111212100200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222111212100200 is an abundant number, since it is smaller than the sum of its proper divisors (313338308734000).

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

222111212100200 is a wasteful number, since it uses less digits than its factorization.

222111212100200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88441671 (or 88441662 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 222111212100200 its reverse (2001212111222), we get a palindrome (224112424211422).

The spelling of 222111212100200 in words is "two hundred twenty-two trillion, one hundred eleven billion, two hundred twelve million, one hundred thousand, two hundred".