212340211 has 4 divisors (see below), whose sum is σ = 212496912. Its totient is φ = 212183512.

The previous prime is 212340187. The next prime is 212340241. The reversal of 212340211 is 112043212.

212340211 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 212340211 - 2¹³ = 212332019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212340241) 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, 76300 + ... + 79033.

It is an arithmetic number, because the mean of its divisors is an integer number (53124228).

Almost surely, 2^212340211 is an apocalyptic number.

212340211 is a deficient number, since it is larger than the sum of its proper divisors (156701).

212340211 is a wasteful number, since it uses less digits than its factorization.

212340211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156700.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 212340211 is about 14571.8979889375. The cubic root of 212340211 is about 596.5919855276.

Adding to 212340211 its reverse (112043212), we get a palindrome (324383423).

The spelling of 212340211 in words is "two hundred twelve million, three hundred forty thousand, two hundred eleven".