211471812 has 36 divisors (see below), whose sum is σ = 543619440. Its totient is φ = 69295152.

The previous prime is 211471787. The next prime is 211471829. The reversal of 211471812 is 218174112.

211471812 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 (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47658 + ... + 51905.

It is an arithmetic number, because the mean of its divisors is an integer number (15100540).

Almost surely, 2^211471812 is an apocalyptic number.

It is an amenable number.

211471812 is an abundant number, since it is smaller than the sum of its proper divisors (332147628).

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

211471812 is a wasteful number, since it uses less digits than its factorization.

211471812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99632 (or 99627 counting only the distinct ones).

The product of its digits is 896, while the sum is 27.

The square root of 211471812 is about 14542.0704165535. The cubic root of 211471812 is about 595.7775884384. Note that the first 3 decimals are identical.

The spelling of 211471812 in words is "two hundred eleven million, four hundred seventy-one thousand, eight hundred twelve".