2111210021111 has 2 divisors, whose sum is σ = 2111210021112. Its totient is φ = 2111210021110.

The previous prime is 2111210021087. The next prime is 2111210021147. The reversal of 2111210021111 is 1111200121112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2111210021111 - 2⁶ = 2111210021047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2111210021161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055605010555 + 1055605010556.

It is an arithmetic number, because the mean of its divisors is an integer number (1055605010556).

Almost surely, 2^{2111210021111} is an apocalyptic number.

2111210021111 is a deficient number, since it is larger than the sum of its proper divisors (1).

2111210021111 is an equidigital number, since it uses as much as digits as its factorization.

2111210021111 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 2111210021111 its reverse (1111200121112), we get a palindrome (3222410142223).

The spelling of 2111210021111 in words is "two trillion, one hundred eleven billion, two hundred ten million, twenty-one thousand, one hundred eleven".