2111171113111 has 2 divisors, whose sum is σ = 2111171113112. Its totient is φ = 2111171113110.

The previous prime is 2111171113043. The next prime is 2111171113153. The reversal of 2111171113111 is 1113111711112.

It is a m-pointer prime, because the next prime (2111171113153) can be obtained adding 2111171113111 to its product of digits (42).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2111171113111 - 2⁹ = 2111171112599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2111171213111) 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, 1055585556555 + 1055585556556.

It is an arithmetic number, because the mean of its divisors is an integer number (1055585556556).

Almost surely, 2^{2111171113111} is an apocalyptic number.

2111171113111 is a deficient number, since it is larger than the sum of its proper divisors (1).

2111171113111 is an equidigital number, since it uses as much as digits as its factorization.

2111171113111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42, while the sum is 22.

Adding to 2111171113111 its reverse (1113111711112), we get a palindrome (3224282824223).

The spelling of 2111171113111 in words is "two trillion, one hundred eleven billion, one hundred seventy-one million, one hundred thirteen thousand, one hundred eleven".