211870212 has 12 divisors (see below), whose sum is σ = 494363856. Its totient is φ = 70623400.

The previous prime is 211870157. The next prime is 211870229. The reversal of 211870212 is 212078112.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8827914 + ... + 8827937.

It is an arithmetic number, because the mean of its divisors is an integer number (41196988).

Almost surely, 2^211870212 is an apocalyptic number.

It is an amenable number.

211870212 is an abundant number, since it is smaller than the sum of its proper divisors (282493644).

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

211870212 is a wasteful number, since it uses less digits than its factorization.

211870212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17655858 (or 17655856 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 24.

The square root of 211870212 is about 14555.7621579909. The cubic root of 211870212 is about 596.1514899510.

The spelling of 211870212 in words is "two hundred eleven million, eight hundred seventy thousand, two hundred twelve".