212668216 has 16 divisors (see below), whose sum is σ = 419740200. Its totient is φ = 100737504.

The previous prime is 212668213. The next prime is 212668297. The reversal of 212668216 is 612866212.

212668216 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 (212668213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 699415 + ... + 699718.

Almost surely, 2^212668216 is an apocalyptic number.

It is an amenable number.

212668216 is a deficient number, since it is larger than the sum of its proper divisors (207071984).

212668216 is a wasteful number, since it uses less digits than its factorization.

212668216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1399158 (or 1399154 counting only the distinct ones).

The product of its digits is 13824, while the sum is 34.

The square root of 212668216 is about 14583.1483569221. The cubic root of 212668216 is about 596.8990155848.

The spelling of 212668216 in words is "two hundred twelve million, six hundred sixty-eight thousand, two hundred sixteen".