212130206 has 4 divisors (see below), whose sum is σ = 318195312. Its totient is φ = 106065102.

The previous prime is 212130161. The next prime is 212130229. The reversal of 212130206 is 602031212.

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 polite number, since it can be written as a sum of consecutive naturals, namely, 53032550 + ... + 53032553.

It is an arithmetic number, because the mean of its divisors is an integer number (79548828).

Almost surely, 2^212130206 is an apocalyptic number.

212130206 is a deficient number, since it is larger than the sum of its proper divisors (106065106).

212130206 is a wasteful number, since it uses less digits than its factorization.

212130206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106065105.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 212130206 is about 14564.6903846254. The cubic root of 212130206 is about 596.3952436651.

Adding to 212130206 its reverse (602031212), we get a palindrome (814161418).

The spelling of 212130206 in words is "two hundred twelve million, one hundred thirty thousand, two hundred six".