215210212 has 24 divisors (see below), whose sum is σ = 430980480. Its totient is φ = 92112960.

The previous prime is 215210209. The next prime is 215210221. The reversal of 215210212 is 212012512.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18912 + ... + 28072.

It is an arithmetic number, because the mean of its divisors is an integer number (17957520).

Almost surely, 2^215210212 is an apocalyptic number.

It is an amenable number.

215210212 is an abundant number, since it is smaller than the sum of its proper divisors (215770268).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

215210212 is a wasteful number, since it uses less digits than its factorization.

215210212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10011 (or 10009 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 215210212 is about 14670.0447170416. The cubic root of 215210212 is about 599.2678217032.

Adding to 215210212 its reverse (212012512), we get a palindrome (427222724).

The spelling of 215210212 in words is "two hundred fifteen million, two hundred ten thousand, two hundred twelve".