212130915 has 32 divisors (see below), whose sum is σ = 359493120. Its totient is φ = 106516224.

The previous prime is 212130907. The next prime is 212130929. The reversal of 212130915 is 519031212.

212130915 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 212130915 - 2³ = 212130907 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45367 + ... + 49823.

It is an arithmetic number, because the mean of its divisors is an integer number (11234160).

Almost surely, 2^212130915 is an apocalyptic number.

212130915 is a deficient number, since it is larger than the sum of its proper divisors (147362205).

212130915 is a wasteful number, since it uses less digits than its factorization.

212130915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4651.

The product of its (nonzero) digits is 540, while the sum is 24.

The square root of 212130915 is about 14564.7147242917. The cubic root of 212130915 is about 596.3959081057.

The spelling of 212130915 in words is "two hundred twelve million, one hundred thirty thousand, nine hundred fifteen".