212122223200 has 72 divisors (see below), whose sum is σ = 519992577720. Its totient is φ = 84496742400.

The previous prime is 212122223147. The next prime is 212122223227. The reversal of 212122223200 is 2322221212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 357310 + ... + 742909.

It is an arithmetic number, because the mean of its divisors is an integer number (7222119135).

Almost surely, 2^212122223200 is an apocalyptic number.

212122223200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212122223200 is an abundant number, since it is smaller than the sum of its proper divisors (307870354520).

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

212122223200 is a wasteful number, since it uses less digits than its factorization.

212122223200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1100480 (or 1100467 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 212122223200 its reverse (2322221212), we get a palindrome (214444444412).

The spelling of 212122223200 in words is "two hundred twelve billion, one hundred twenty-two million, two hundred twenty-three thousand, two hundred".