212235211 has 2 divisors, whose sum is σ = 212235212. Its totient is φ = 212235210.

The previous prime is 212235209. The next prime is 212235217. The reversal of 212235211 is 112532212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212235211 - 2¹ = 212235209 is a prime.

Together with 212235209, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (212235217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106117605 + 106117606.

It is an arithmetic number, because the mean of its divisors is an integer number (106117606).

Almost surely, 2^212235211 is an apocalyptic number.

212235211 is a deficient number, since it is larger than the sum of its proper divisors (1).

212235211 is an equidigital number, since it uses as much as digits as its factorization.

212235211 is an evil number, because the sum of its binary digits is even.

The product of its digits is 240, while the sum is 19.

The square root of 212235211 is about 14568.2947183258. The cubic root of 212235211 is about 596.4936331614.

Adding to 212235211 its reverse (112532212), we get a palindrome (324767423).

The spelling of 212235211 in words is "two hundred twelve million, two hundred thirty-five thousand, two hundred eleven".