2121110210111 has 2 divisors, whose sum is σ = 2121110210112. Its totient is φ = 2121110210110.

The previous prime is 2121110210099. The next prime is 2121110210113. The reversal of 2121110210111 is 1110120111212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2121110210111 - 2³⁴ = 2103930340927 is a prime.

Together with 2121110210113, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2121110210113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060555105055 + 1060555105056.

It is an arithmetic number, because the mean of its divisors is an integer number (1060555105056).

Almost surely, 2^{2121110210111} is an apocalyptic number.

2121110210111 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121110210111 is an equidigital number, since it uses as much as digits as its factorization.

2121110210111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 2121110210111 its reverse (1110120111212), we get a palindrome (3231230321323).

The spelling of 2121110210111 in words is "two trillion, one hundred twenty-one billion, one hundred ten million, two hundred ten thousand, one hundred eleven".