212668215 has 32 divisors (see below), whose sum is σ = 371920896. Its totient is φ = 103303680.

The previous prime is 212668213. The next prime is 212668297. The reversal of 212668215 is 512866212.

It is not a de Polignac number, because 212668215 - 2¹ = 212668213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212668213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5547 + ... + 21356.

It is an arithmetic number, because the mean of its divisors is an integer number (11622528).

Almost surely, 2^212668215 is an apocalyptic number.

212668215 is a deficient number, since it is larger than the sum of its proper divisors (159252681).

212668215 is a wasteful number, since it uses less digits than its factorization.

212668215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26959.

The product of its digits is 11520, while the sum is 33.

The square root of 212668215 is about 14583.1483226360. The cubic root of 212668215 is about 596.8990146492.

The spelling of 212668215 in words is "two hundred twelve million, six hundred sixty-eight thousand, two hundred fifteen".