112111212111 has 16 divisors (see below), whose sum is σ = 158283465984. Its totient is φ = 70340372864.

The previous prime is 112111212107. The next prime is 112111212151. The reversal of 112111212111 is 111212111211.

It is not a de Polignac number, because 112111212111 - 2² = 112111212107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112111212151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1064740 + ... + 1165286.

It is an arithmetic number, because the mean of its divisors is an integer number (9892716624).

Almost surely, 2^112111212111 is an apocalyptic number.

112111212111 is a deficient number, since it is larger than the sum of its proper divisors (46172253873).

112111212111 is a wasteful number, since it uses less digits than its factorization.

112111212111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122430.

The product of its digits is 8, while the sum is 15.

Adding to 112111212111 its reverse (111212111211), we get a palindrome (223323323322).

The spelling of 112111212111 in words is "one hundred twelve billion, one hundred eleven million, two hundred twelve thousand, one hundred eleven".