211705412 has 12 divisors (see below), whose sum is σ = 371031696. Its totient is φ = 105696360.

The previous prime is 211705397. The next prime is 211705433. The reversal of 211705412 is 214507112.

211705412 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 36014 + ... + 41477.

It is an arithmetic number, because the mean of its divisors is an integer number (30919308).

Almost surely, 2^211705412 is an apocalyptic number.

It is an amenable number.

211705412 is a deficient number, since it is larger than the sum of its proper divisors (159326284).

211705412 is a wasteful number, since it uses less digits than its factorization.

211705412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78178 (or 78176 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 23.

The square root of 211705412 is about 14550.1000683844. The cubic root of 211705412 is about 595.9968807548.

The spelling of 211705412 in words is "two hundred eleven million, seven hundred five thousand, four hundred twelve".