222121031200 has 72 divisors (see below), whose sum is σ = 542350638900. Its totient is φ = 88832409600.

The previous prime is 222121031177. The next prime is 222121031203. The reversal of 222121031200 is 2130121222.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 53045459856 + 169075571344 = 230316^2 + 411188^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (222121031203) 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, 5066976 + ... + 5110624.

Almost surely, 2^222121031200 is an apocalyptic number.

222121031200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222121031200 is an abundant number, since it is smaller than the sum of its proper divisors (320229607700).

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

222121031200 is a wasteful number, since it uses less digits than its factorization.

222121031200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50030 (or 50017 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 222121031200 its reverse (2130121222), we get a palindrome (224251152422).

The spelling of 222121031200 in words is "two hundred twenty-two billion, one hundred twenty-one million, thirty-one thousand, two hundred".