212666271 has 8 divisors (see below), whose sum is σ = 284634240. Its totient is φ = 141237912.

The previous prime is 212666249. The next prime is 212666273. The reversal of 212666271 is 172666212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 212666271 - 2⁵ = 212666239 is a prime.

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, 133981 + ... + 135558.

It is an arithmetic number, because the mean of its divisors is an integer number (35579280).

Almost surely, 2^212666271 is an apocalyptic number.

212666271 is a deficient number, since it is larger than the sum of its proper divisors (71967969).

212666271 is a wasteful number, since it uses less digits than its factorization.

212666271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269805.

The product of its digits is 12096, while the sum is 33.

The square root of 212666271 is about 14583.0816702095. The cubic root of 212666271 is about 596.8971958925.

The spelling of 212666271 in words is "two hundred twelve million, six hundred sixty-six thousand, two hundred seventy-one".