222120212200 has 48 divisors (see below), whose sum is σ = 526173471180. Its totient is φ = 87171701760.

The previous prime is 222120212189. The next prime is 222120212201. The reversal of 222120212200 is 2212021222.

It can be written as a sum of positive squares in 6 ways, for example, as 48829508676 + 173290703524 = 220974^2 + 416282^2 .

It is not an unprimeable number, because it can be changed into a prime (222120212201) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 10466769 + ... + 10487968.

Almost surely, 2^222120212200 is an apocalyptic number.

222120212200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222120212200 is an abundant number, since it is smaller than the sum of its proper divisors (304053258980).

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

222120212200 is a wasteful number, since it uses less digits than its factorization.

222120212200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20954806 (or 20954797 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 222120212200 its reverse (2212021222), we get a palindrome (224332233422).

The spelling of 222120212200 in words is "two hundred twenty-two billion, one hundred twenty million, two hundred twelve thousand, two hundred".