222212221200 has 180 divisors, whose sum is σ = 787545927168. Its totient is φ = 57995769600.

The previous prime is 222212221199. The next prime is 222212221241. The reversal of 222212221200 is 2122212222.

222212221200 is a `hidden beast` number, since 22 + 221 + 2 + 221 + 200 = 666.

It is a tau number, because it is divible by the number of its divisors (180).

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

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 487456 + ... + 825855.

Almost surely, 2^222212221200 is an apocalyptic number.

222212221200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222212221200 is an abundant number, since it is smaller than the sum of its proper divisors (565333705968).

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

222212221200 is a wasteful number, since it uses less digits than its factorization.

222212221200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1313382 (or 1313368 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 222212221200 its reverse (2122212222), we get a palindrome (224334433422).

The spelling of 222212221200 in words is "two hundred twenty-two billion, two hundred twelve million, two hundred twenty-one thousand, two hundred".