12112111105 has 8 divisors (see below), whose sum is σ = 14535243072. Its totient is φ = 9689215728.

The previous prime is 12112110943. The next prime is 12112111133. The reversal of 12112111105 is 50111121121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12112111105 - 2¹³ = 12112102913 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 85764 + ... + 177706.

It is an arithmetic number, because the mean of its divisors is an integer number (1816905384).

Almost surely, 2^12112111105 is an apocalyptic number.

It is an amenable number.

12112111105 is a deficient number, since it is larger than the sum of its proper divisors (2423131967).

12112111105 is an equidigital number, since it uses as much as digits as its factorization.

12112111105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118295.

The product of its (nonzero) digits is 20, while the sum is 16.

Adding to 12112111105 its reverse (50111121121), we get a palindrome (62223232226).

The spelling of 12112111105 in words is "twelve billion, one hundred twelve million, one hundred eleven thousand, one hundred five".