212244211 has 2 divisors, whose sum is σ = 212244212. Its totient is φ = 212244210.

The previous prime is 212244209. The next prime is 212244217. The reversal of 212244211 is 112442212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212244211 - 2¹ = 212244209 is a prime.

Together with 212244209, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (212244217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106122105 + 106122106.

It is an arithmetic number, because the mean of its divisors is an integer number (106122106).

Almost surely, 2^212244211 is an apocalyptic number.

212244211 is a deficient number, since it is larger than the sum of its proper divisors (1).

212244211 is an equidigital number, since it uses as much as digits as its factorization.

212244211 is an evil number, because the sum of its binary digits is even.

The product of its digits is 256, while the sum is 19.

The square root of 212244211 is about 14568.6036050131. The cubic root of 212244211 is about 596.5020646351.

Adding to 212244211 its reverse (112442212), we get a palindrome (324686423).

The spelling of 212244211 in words is "two hundred twelve million, two hundred forty-four thousand, two hundred eleven".