212106166 has 8 divisors (see below), whose sum is σ = 318991104. Its totient is φ = 105775800.

The previous prime is 212106151. The next prime is 212106197. The reversal of 212106166 is 661601212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 212106166.

It is a congruent number.

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, 137685 + ... + 139216.

It is an arithmetic number, because the mean of its divisors is an integer number (39873888).

Almost surely, 2^212106166 is an apocalyptic number.

212106166 is a deficient number, since it is larger than the sum of its proper divisors (106884938).

212106166 is a wasteful number, since it uses less digits than its factorization.

212106166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277286.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 212106166 is about 14563.8650776502. The cubic root of 212106166 is about 596.3727136609.

Adding to 212106166 its reverse (661601212), we get a palindrome (873707378).

The spelling of 212106166 in words is "two hundred twelve million, one hundred six thousand, one hundred sixty-six".