11511611114111 has 2 divisors, whose sum is σ = 11511611114112. Its totient is φ = 11511611114110.

The previous prime is 11511611114083. The next prime is 11511611114231. The reversal of 11511611114111 is 11141111611511.

It is a m-pointer prime, because the next prime (11511611114231) can be obtained adding 11511611114111 to its product of digits (120).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11511611114111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11511611114411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5755805557055 + 5755805557056.

It is an arithmetic number, because the mean of its divisors is an integer number (5755805557056).

Almost surely, 2^{11511611114111} is an apocalyptic number.

11511611114111 is a deficient number, since it is larger than the sum of its proper divisors (1).

11511611114111 is an equidigital number, since it uses as much as digits as its factorization.

11511611114111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120, while the sum is 26.

Adding to 11511611114111 its reverse (11141111611511), we get a palindrome (22652722725622).

The spelling of 11511611114111 in words is "eleven trillion, five hundred eleven billion, six hundred eleven million, one hundred fourteen thousand, one hundred eleven".