212666270 has 16 divisors (see below), whose sum is σ = 383071248. Its totient is φ = 85006080.

The previous prime is 212666249. The next prime is 212666273. The reversal of 212666270 is 72666212.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212666273) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8942 + ... + 22478.

It is an arithmetic number, because the mean of its divisors is an integer number (23941953).

Almost surely, 2^212666270 is an apocalyptic number.

212666270 is a deficient number, since it is larger than the sum of its proper divisors (170404978).

212666270 is a wasteful number, since it uses less digits than its factorization.

212666270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15115.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 212666270 is about 14583.0816359232. The cubic root of 212666270 is about 596.8971949569.

The spelling of 212666270 in words is "two hundred twelve million, six hundred sixty-six thousand, two hundred seventy".