211210111210211 has 2 divisors, whose sum is σ = 211210111210212. Its totient is φ = 211210111210210.

The previous prime is 211210111210139. The next prime is 211210111210213. The reversal of 211210111210211 is 112012111012112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 211210111210211 - 2⁴⁶ = 140841367032547 is a prime.

It is a super-2 number, since 2×211210111210211² (a number of 29 digits) contains 22 as substring.

Together with 211210111210213, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 211210111210211.

It is not a weakly prime, because it can be changed into another prime (211210111210213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105605055605105 + 105605055605106.

It is an arithmetic number, because the mean of its divisors is an integer number (105605055605106).

Almost surely, 2^{211210111210211} is an apocalyptic number.

211210111210211 is a deficient number, since it is larger than the sum of its proper divisors (1).

211210111210211 is an equidigital number, since it uses as much as digits as its factorization.

211210111210211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 211210111210211 its reverse (112012111012112), we get a palindrome (323222222222323).

The spelling of 211210111210211 in words is "two hundred eleven trillion, two hundred ten billion, one hundred eleven million, two hundred ten thousand, two hundred eleven".