12222112012200 has 144 divisors (see below), whose sum is σ = 41124712297500. Its totient is φ = 3252973900800.

The previous prime is 12222112012199. The next prime is 12222112012217. The reversal of 12222112012200 is 221021122221.

It is a happy number.

12222112012200 is a `hidden beast` number, since 1 + 22 + 221 + 1 + 201 + 220 + 0 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 2530981900836 + 9691130111364 = 1590906^2 + 3113058^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 5578575 + ... + 7454174.

Almost surely, 2^{12222112012200} is an apocalyptic number.

12222112012200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12222112012200 is an abundant number, since it is smaller than the sum of its proper divisors (28902600285300).

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

12222112012200 is a wasteful number, since it uses less digits than its factorization.

12222112012200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13033292 (or 13033280 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 12222112012200 its reverse (221021122221), we get a palindrome (12443133134421).

The spelling of 12222112012200 in words is "twelve trillion, two hundred twenty-two billion, one hundred twelve million, twelve thousand, two hundred".