1113111112111 has 2 divisors, whose sum is σ = 1113111112112. Its totient is φ = 1113111112110.

The previous prime is 1113111112067. The next prime is 1113111112117. The reversal of 1113111112111 is 1112111113111.

It is a m-pointer prime, because the next prime (1113111112117) can be obtained adding 1113111112111 to its product of digits (6).

It is a strong prime.

It is an emirp because it is prime and its reverse (1112111113111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1113111112111 - 2²¹ = 1113109014959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1113111112117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556555556055 + 556555556056.

It is an arithmetic number, because the mean of its divisors is an integer number (556555556056).

Almost surely, 2^{1113111112111} is an apocalyptic number.

1113111112111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1113111112111 is an equidigital number, since it uses as much as digits as its factorization.

1113111112111 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 1113111112111 its reverse (1112111113111), we get a palindrome (2225222225222).

The spelling of 1113111112111 in words is "one trillion, one hundred thirteen billion, one hundred eleven million, one hundred twelve thousand, one hundred eleven".