212708215 has 4 divisors (see below), whose sum is σ = 255249864. Its totient is φ = 170166568.

The previous prime is 212708201. The next prime is 212708273. The reversal of 212708215 is 512807212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 212708215 - 2⁷ = 212708087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21270817 + ... + 21270826.

It is an arithmetic number, because the mean of its divisors is an integer number (63812466).

Almost surely, 2^212708215 is an apocalyptic number.

212708215 is a deficient number, since it is larger than the sum of its proper divisors (42541649).

212708215 is an equidigital number, since it uses as much as digits as its factorization.

212708215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42541648.

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 212708215 is about 14584.5197041246. The cubic root of 212708215 is about 596.9364351665.

The spelling of 212708215 in words is "two hundred twelve million, seven hundred eight thousand, two hundred fifteen".