216112216 has 16 divisors (see below), whose sum is σ = 405414000. Its totient is φ = 108001824.

The previous prime is 216112207. The next prime is 216112219. The reversal of 216112216 is 612211612.

216112216 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216112219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13810 + ... + 24958.

It is an arithmetic number, because the mean of its divisors is an integer number (25338375).

Almost surely, 2^216112216 is an apocalyptic number.

It is an amenable number.

216112216 is a deficient number, since it is larger than the sum of its proper divisors (189301784).

216112216 is a wasteful number, since it uses less digits than its factorization.

216112216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13578 (or 13574 counting only the distinct ones).

The product of its digits is 288, while the sum is 22.

The square root of 216112216 is about 14700.7556268377. The cubic root of 216112216 is about 600.1038857156.

Adding to 216112216 its reverse (612211612), we get a palindrome (828323828).

The spelling of 216112216 in words is "two hundred sixteen million, one hundred twelve thousand, two hundred sixteen".