1112312111 has 2 divisors, whose sum is σ = 1112312112. Its totient is φ = 1112312110.

The previous prime is 1112312099. The next prime is 1112312119. The reversal of 1112312111 is 1112132111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1112312111 - 2¹⁰ = 1112311087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1112312119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556156055 + 556156056.

It is an arithmetic number, because the mean of its divisors is an integer number (556156056).

Almost surely, 2^1112312111 is an apocalyptic number.

1112312111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1112312111 is an equidigital number, since it uses as much as digits as its factorization.

1112312111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12, while the sum is 14.

The square root of 1112312111 is about 33351.3434661934. The cubic root of 1112312111 is about 1036.1172128652.

Adding to 1112312111 its reverse (1112132111), we get a palindrome (2224444222).

The spelling of 1112312111 in words is "one billion, one hundred twelve million, three hundred twelve thousand, one hundred eleven".