211888216 has 16 divisors (see below), whose sum is σ = 397976040. Its totient is φ = 105761280.

The previous prime is 211888199. The next prime is 211888217. The reversal of 211888216 is 612888112.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211888217) 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, 17865 + ... + 27256.

Almost surely, 2^211888216 is an apocalyptic number.

It is an amenable number.

211888216 is a deficient number, since it is larger than the sum of its proper divisors (186087824).

211888216 is a wasteful number, since it uses less digits than its factorization.

211888216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45714 (or 45710 counting only the distinct ones).

The product of its digits is 12288, while the sum is 37.

The square root of 211888216 is about 14556.3805940900. The cubic root of 211888216 is about 596.1683757720.

The spelling of 211888216 in words is "two hundred eleven million, eight hundred eighty-eight thousand, two hundred sixteen".