212130211 has 4 divisors (see below), whose sum is σ = 212467024. Its totient is φ = 211793400.

The previous prime is 212130161. The next prime is 212130229. The reversal of 212130211 is 112031212.

212130211 is digitally balanced in base 2, 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 cyclic number.

It is not a de Polignac number, because 212130211 - 2¹³ = 212122019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212130191 and 212130200.

It is not an unprimeable number, because it can be changed into a prime (212130271) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167460 + ... + 168721.

It is an arithmetic number, because the mean of its divisors is an integer number (53116756).

Almost surely, 2^212130211 is an apocalyptic number.

212130211 is a deficient number, since it is larger than the sum of its proper divisors (336813).

212130211 is an equidigital number, since it uses as much as digits as its factorization.

212130211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336812.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 212130211 is about 14564.6905562734. The cubic root of 212130211 is about 596.3952483509.

Adding to 212130211 its reverse (112031212), we get a palindrome (324161423).

The spelling of 212130211 in words is "two hundred twelve million, one hundred thirty thousand, two hundred eleven".