212181714 has 16 divisors (see below), whose sum is σ = 471515040. Its totient is φ = 70727220.

The previous prime is 212181679. The next prime is 212181757. The reversal of 212181714 is 417181212.

212181714 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1964592 + ... + 1964699.

It is an arithmetic number, because the mean of its divisors is an integer number (29469690).

Almost surely, 2^212181714 is an apocalyptic number.

212181714 is an abundant number, since it is smaller than the sum of its proper divisors (259333326).

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

212181714 is a wasteful number, since it uses less digits than its factorization.

212181714 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3929302 (or 3929296 counting only the distinct ones).

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

The square root of 212181714 is about 14566.4585263543. The cubic root of 212181714 is about 596.4435106247.

The spelling of 212181714 in words is "two hundred twelve million, one hundred eighty-one thousand, seven hundred fourteen".