216212160 has 56 divisors (see below), whose sum is σ = 686476656. Its totient is φ = 57656320.

The previous prime is 216212159. The next prime is 216212189. The reversal of 216212160 is 61212612.

216212160 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111651 + ... + 113570.

Almost surely, 2^216212160 is an apocalyptic number.

216212160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

216212160 is an abundant number, since it is smaller than the sum of its proper divisors (470264496).

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

216212160 is a wasteful number, since it uses less digits than its factorization.

216212160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225241 (or 225231 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 216212160 is about 14704.1545149662. The cubic root of 216212160 is about 600.1963801622.

Adding to 216212160 its reverse (61212612), we get a palindrome (277424772).

The spelling of 216212160 in words is "two hundred sixteen million, two hundred twelve thousand, one hundred sixty".