11113111612111 has 2 divisors, whose sum is σ = 11113111612112. Its totient is φ = 11113111612110.

The previous prime is 11113111612069. The next prime is 11113111612147. The reversal of 11113111612111 is 11121611131111.

It is a m-pointer prime, because the next prime (11113111612147) can be obtained adding 11113111612111 to its product of digits (36).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11113111612111 - 2¹⁵ = 11113111579343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11113111612151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5556555806055 + 5556555806056.

It is an arithmetic number, because the mean of its divisors is an integer number (5556555806056).

Almost surely, 2^{11113111612111} is an apocalyptic number.

11113111612111 is a deficient number, since it is larger than the sum of its proper divisors (1).

11113111612111 is an equidigital number, since it uses as much as digits as its factorization.

11113111612111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36, while the sum is 22.

Adding to 11113111612111 its reverse (11121611131111), we get a palindrome (22234722743222).

The spelling of 11113111612111 in words is "eleven trillion, one hundred thirteen billion, one hundred eleven million, six hundred twelve thousand, one hundred eleven".