211989212 has 6 divisors (see below), whose sum is σ = 370981128. Its totient is φ = 105994604.

The previous prime is 211989179. The next prime is 211989293. The reversal of 211989212 is 212989112.

211989212 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 an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26498648 + ... + 26498655.

It is an arithmetic number, because the mean of its divisors is an integer number (61830188).

Almost surely, 2^211989212 is an apocalyptic number.

It is an amenable number.

211989212 is a deficient number, since it is larger than the sum of its proper divisors (158991916).

211989212 is a wasteful number, since it uses less digits than its factorization.

211989212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52997307 (or 52997305 counting only the distinct ones).

The product of its digits is 5184, while the sum is 35.

The square root of 211989212 is about 14559.8493124070. The cubic root of 211989212 is about 596.2630814594.

The spelling of 211989212 in words is "two hundred eleven million, nine hundred eighty-nine thousand, two hundred twelve".