212189084 has 12 divisors (see below), whose sum is σ = 374166408. Its totient is φ = 105284400.

The previous prime is 212189059. The next prime is 212189113. The reversal of 212189084 is 480981212.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 201947 + ... + 202994.

It is an arithmetic number, because the mean of its divisors is an integer number (31180534).

Almost surely, 2^212189084 is an apocalyptic number.

It is an amenable number.

212189084 is a deficient number, since it is larger than the sum of its proper divisors (161977324).

212189084 is a wasteful number, since it uses less digits than its factorization.

212189084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405076 (or 405074 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 35.

The square root of 212189084 is about 14566.7115026007. The cubic root of 212189084 is about 596.4504162430.

The spelling of 212189084 in words is "two hundred twelve million, one hundred eighty-nine thousand, eighty-four".