212171486 has 4 divisors (see below), whose sum is σ = 318257232. Its totient is φ = 106085742.

The previous prime is 212171437. The next prime is 212171497. The reversal of 212171486 is 684171212.

It is a happy number.

212171486 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

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 as a sum of consecutive naturals, namely, 53042870 + ... + 53042873.

It is an arithmetic number, because the mean of its divisors is an integer number (79564308).

Almost surely, 2^212171486 is an apocalyptic number.

212171486 is a deficient number, since it is larger than the sum of its proper divisors (106085746).

212171486 is a wasteful number, since it uses less digits than its factorization.

212171486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106085745.

The product of its digits is 5376, while the sum is 32.

The square root of 212171486 is about 14566.1074415919. The cubic root of 212171486 is about 596.4339268232.

The spelling of 212171486 in words is "two hundred twelve million, one hundred seventy-one thousand, four hundred eighty-six".