212012170 has 16 divisors (see below), whose sum is σ = 383146848. Its totient is φ = 84466000.

The previous prime is 212012123. The next prime is 212012197. The reversal of 212012170 is 71210212.

212012170 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 7 ways as a sum of consecutive naturals, for example, 39724 + ... + 44743.

It is an arithmetic number, because the mean of its divisors is an integer number (23946678).

Almost surely, 2^212012170 is an apocalyptic number.

212012170 is a deficient number, since it is larger than the sum of its proper divisors (171134678).

212012170 is a wasteful number, since it uses less digits than its factorization.

212012170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84725.

The product of its (nonzero) digits is 56, while the sum is 16.

The square root of 212012170 is about 14560.6376920793. The cubic root of 212012170 is about 596.2846053749.

Adding to 212012170 its reverse (71210212), we get a palindrome (283222382).

The spelling of 212012170 in words is "two hundred twelve million, twelve thousand, one hundred seventy".