215213112 has 80 divisors (see below), whose sum is σ = 611916360. Its totient is φ = 70652736.

The previous prime is 215213099. The next prime is 215213137. The reversal of 215213112 is 211312512.

215213112 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 40938 + ... + 45894.

Almost surely, 2^215213112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 215213112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (305958180).

215213112 is an abundant number, since it is smaller than the sum of its proper divisors (396703248).

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

215213112 is a wasteful number, since it uses less digits than its factorization.

215213112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5042 (or 5029 counting only the distinct ones).

The product of its digits is 120, while the sum is 18.

The square root of 215213112 is about 14670.1435575798. The cubic root of 215213112 is about 599.2705134417.

Adding to 215213112 its reverse (211312512), we get a palindrome (426525624).

The spelling of 215213112 in words is "two hundred fifteen million, two hundred thirteen thousand, one hundred twelve".