213102215 has 16 divisors (see below), whose sum is σ = 270418176. Its totient is φ = 160953600.

The previous prime is 213102209. The next prime is 213102247. The reversal of 213102215 is 512201312.

It is a happy number.

It is not a de Polignac number, because 213102215 - 2²² = 208907911 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213102193 and 213102202.

It is a congruent number.

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, 10412 + ... + 23121.

It is an arithmetic number, because the mean of its divisors is an integer number (16901136).

Almost surely, 2^213102215 is an apocalyptic number.

213102215 is a deficient number, since it is larger than the sum of its proper divisors (57315961).

213102215 is a wasteful number, since it uses less digits than its factorization.

213102215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33610.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 213102215 is about 14598.0209275093. The cubic root of 213102215 is about 597.3047768226.

Adding to 213102215 its reverse (512201312), we get a palindrome (725303527).

The spelling of 213102215 in words is "two hundred thirteen million, one hundred two thousand, two hundred fifteen".