3111111112111 has 2 divisors, whose sum is σ = 3111111112112. Its totient is φ = 3111111112110.

The previous prime is 3111111112091. The next prime is 3111111112117. The reversal of 3111111112111 is 1112111111113.

It is a m-pointer prime, because the next prime (3111111112117) can be obtained adding 3111111112111 to its product of digits (6).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3111111112111 - 2⁹ = 3111111111599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3111111112117) 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, 1555555556055 + 1555555556056.

It is an arithmetic number, because the mean of its divisors is an integer number (1555555556056).

Almost surely, 2^{3111111112111} is an apocalyptic number.

3111111112111 is a deficient number, since it is larger than the sum of its proper divisors (1).

3111111112111 is an equidigital number, since it uses as much as digits as its factorization.

3111111112111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6, while the sum is 16.

Adding to 3111111112111 its reverse (1112111111113), we get a palindrome (4223222223224).

The spelling of 3111111112111 in words is "three trillion, one hundred eleven billion, one hundred eleven million, one hundred twelve thousand, one hundred eleven".