213022215 has 48 divisors (see below), whose sum is σ = 431827968. Its totient is φ = 95110848.

The previous prime is 213022169. The next prime is 213022217. The reversal of 213022215 is 512220312.

213022215 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 213022215 - 2⁸ = 213021959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213022217) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5682 + ... + 21408.

It is an arithmetic number, because the mean of its divisors is an integer number (8996416).

Almost surely, 2^213022215 is an apocalyptic number.

213022215 is an abundant number, since it is smaller than the sum of its proper divisors (218805753).

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

213022215 is a wasteful number, since it uses less digits than its factorization.

213022215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15788 (or 15785 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 213022215 is about 14595.2805728427. The cubic root of 213022215 is about 597.2300233951.

Adding to 213022215 its reverse (512220312), we get a palindrome (725242527).

The spelling of 213022215 in words is "two hundred thirteen million, twenty-two thousand, two hundred fifteen".