212151585 has 16 divisors (see below), whose sum is σ = 359410176. Its totient is φ = 106491648.

The previous prime is 212151571. The next prime is 212151593. The reversal of 212151585 is 585151212.

It is not a de Polignac number, because 212151585 - 2⁵ = 212151553 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 415729 + ... + 416238.

It is an arithmetic number, because the mean of its divisors is an integer number (22463136).

Almost surely, 2^212151585 is an apocalyptic number.

It is an amenable number.

212151585 is a deficient number, since it is larger than the sum of its proper divisors (147258591).

212151585 is a wasteful number, since it uses less digits than its factorization.

212151585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 831992.

The product of its digits is 4000, while the sum is 30.

The square root of 212151585 is about 14565.4242986602. The cubic root of 212151585 is about 596.4152783816.

The spelling of 212151585 in words is "two hundred twelve million, one hundred fifty-one thousand, five hundred eighty-five".