212112200 has 48 divisors (see below), whose sum is σ = 519126000. Its totient is φ = 80377920.

The previous prime is 212112169. The next prime is 212112223. The reversal of 212112200 is 2211212.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24110 + ... + 31709.

It is an arithmetic number, because the mean of its divisors is an integer number (10815125).

Almost surely, 2^212112200 is an apocalyptic number.

212112200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212112200 is an abundant number, since it is smaller than the sum of its proper divisors (307013800).

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

212112200 is a wasteful number, since it uses less digits than its factorization.

212112200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55854 (or 55845 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 212112200 is about 14564.0722327239. The cubic root of 212112200 is about 596.3783688145.

Adding to 212112200 its reverse (2211212), we get a palindrome (214323412).

The spelling of 212112200 in words is "two hundred twelve million, one hundred twelve thousand, two hundred".