222220121221200 has 120 divisors (see below), whose sum is σ = 713017850706688. Its totient is φ = 59161073264640.

The previous prime is 222220121221177. The next prime is 222220121221223. The reversal of 222220121221200 is 2122121022222.

It is an interprime number because it is at equal distance from previous prime (222220121221177) and next prime (222220121221223).

It is a tau number, because it is divible by the number of its divisors (120).

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, 151811497 + ... + 153268296.

Almost surely, 2^{222220121221200} is an apocalyptic number.

222220121221200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222220121221200 is an abundant number, since it is smaller than the sum of its proper divisors (490797729485488).

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

222220121221200 is a wasteful number, since it uses less digits than its factorization.

222220121221200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305080421 (or 305080410 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 222220121221200 its reverse (2122121022222), we get a palindrome (224342242243422).

The spelling of 222220121221200 in words is "two hundred twenty-two trillion, two hundred twenty billion, one hundred twenty-one million, two hundred twenty-one thousand, two hundred".