211010111210111 has 2 divisors, whose sum is σ = 211010111210112. Its totient is φ = 211010111210110.

The previous prime is 211010111210083. The next prime is 211010111210123. The reversal of 211010111210111 is 111012111010112.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211010111210111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211010111210011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105505055605055 + 105505055605056.

It is an arithmetic number, because the mean of its divisors is an integer number (105505055605056).

Almost surely, 2^{211010111210111} is an apocalyptic number.

211010111210111 is a deficient number, since it is larger than the sum of its proper divisors (1).

211010111210111 is an equidigital number, since it uses as much as digits as its factorization.

211010111210111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4, while the sum is 14.

Adding to 211010111210111 its reverse (111012111010112), we get a palindrome (322022222220223).

The spelling of 211010111210111 in words is "two hundred eleven trillion, ten billion, one hundred eleven million, two hundred ten thousand, one hundred eleven".