212816216 has 8 divisors (see below), whose sum is σ = 399030420. Its totient is φ = 106408104.

The previous prime is 212816213. The next prime is 212816273. The reversal of 212816216 is 612618212.

212816216 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212816213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13301006 + ... + 13301021.

Almost surely, 2^212816216 is an apocalyptic number.

It is an amenable number.

212816216 is a deficient number, since it is larger than the sum of its proper divisors (186214204).

212816216 is a wasteful number, since it uses less digits than its factorization.

212816216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26602033 (or 26602029 counting only the distinct ones).

The product of its digits is 2304, while the sum is 29.

The square root of 212816216 is about 14588.2218244720. The cubic root of 212816216 is about 597.0374480707.

The spelling of 212816216 in words is "two hundred twelve million, eight hundred sixteen thousand, two hundred sixteen".