212343211 has 8 divisors (see below), whose sum is σ = 220774400. Its totient is φ = 204010920.

The previous prime is 212343169. The next prime is 212343217. The reversal of 212343211 is 112343212.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 212343211 - 2⁷ = 212343083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212343217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20331 + ... + 28948.

It is an arithmetic number, because the mean of its divisors is an integer number (27596800).

Almost surely, 2^212343211 is an apocalyptic number.

212343211 is a deficient number, since it is larger than the sum of its proper divisors (8431189).

212343211 is a wasteful number, since it uses less digits than its factorization.

212343211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49449.

The product of its digits is 288, while the sum is 19.

The square root of 212343211 is about 14572.0009264342. Note that the first 3 decimals coincide. The cubic root of 212343211 is about 596.5947951188.

Adding to 212343211 its reverse (112343212), we get a palindrome (324686423).

Subtracting from 212343211 its reverse (112343212), we obtain a palindrome (99999999).

The spelling of 212343211 in words is "two hundred twelve million, three hundred forty-three thousand, two hundred eleven".