212442200 has 48 divisors (see below), whose sum is σ = 522991080. Its totient is φ = 79976960.

The previous prime is 212442161. The next prime is 212442227. The reversal of 212442200 is 2244212.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27842 + ... + 34641.

Almost surely, 2^212442200 is an apocalyptic number.

212442200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212442200 is an abundant number, since it is smaller than the sum of its proper divisors (310548880).

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

212442200 is a wasteful number, since it uses less digits than its factorization.

212442200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62516 (or 62507 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 212442200 is about 14575.3970786391. The cubic root of 212442200 is about 596.6874864861.

Adding to 212442200 its reverse (2244212), we get a palindrome (214686412).

The spelling of 212442200 in words is "two hundred twelve million, four hundred forty-two thousand, two hundred".