212715 has 24 divisors (see below), whose sum is σ = 383760. Its totient is φ = 108864.

The previous prime is 212701. The next prime is 212777. The reversal of 212715 is 517212.

It is not a de Polignac number, because 212715 - 2⁵ = 212683 is a prime.

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 23 ways as a sum of consecutive naturals, for example, 1224 + ... + 1386.

It is an arithmetic number, because the mean of its divisors is an integer number (15990).

2²¹²⁷¹⁵ is an apocalyptic number.

212715 is a deficient number, since it is larger than the sum of its proper divisors (171045).

212715 is a wasteful number, since it uses less digits than its factorization.

212715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203 (or 200 counting only the distinct ones).

The product of its digits is 140, while the sum is 18.

The square root of 212715 is about 461.2103641507. The cubic root of 212715 is about 59.6942782156.

Adding to 212715 its reverse (517212), we get a palindrome (729927).

The spelling of 212715 in words is "two hundred twelve thousand, seven hundred fifteen".