216612116 has 24 divisors (see below), whose sum is σ = 438096960. Its totient is φ = 91789632.

The previous prime is 216612083. The next prime is 216612119. The reversal of 216612116 is 611216612.

216612116 is digitally balanced in base 2, 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 (216612119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40970 + ... + 45953.

It is an arithmetic number, because the mean of its divisors is an integer number (18254040).

Almost surely, 2^216612116 is an apocalyptic number.

It is an amenable number.

216612116 is an abundant number, since it is smaller than the sum of its proper divisors (221484844).

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

216612116 is a wasteful number, since it uses less digits than its factorization.

216612116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87023 (or 87021 counting only the distinct ones).

The product of its digits is 864, while the sum is 26.

The square root of 216612116 is about 14717.7483332200. The cubic root of 216612116 is about 600.5662395273.

Adding to 216612116 its reverse (611216612), we get a palindrome (827828728).

The spelling of 216612116 in words is "two hundred sixteen million, six hundred twelve thousand, one hundred sixteen".