212230211 has 2 divisors, whose sum is σ = 212230212. Its totient is φ = 212230210.

The previous prime is 212230181. The next prime is 212230237. The reversal of 212230211 is 112032212.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212230211 - 2²² = 208035907 is a prime.

It is a super-2 number, since 2×212230211² = 90083324922209042, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (212230111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106115105 + 106115106.

It is an arithmetic number, because the mean of its divisors is an integer number (106115106).

Almost surely, 2^212230211 is an apocalyptic number.

212230211 is a deficient number, since it is larger than the sum of its proper divisors (1).

212230211 is an equidigital number, since it uses as much as digits as its factorization.

212230211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 212230211 is about 14568.1231117807. The cubic root of 212230211 is about 596.4889489063.

Adding to 212230211 its reverse (112032212), we get a palindrome (324262423).

The spelling of 212230211 in words is "two hundred twelve million, two hundred thirty thousand, two hundred eleven".