12110111121 has 4 divisors (see below), whose sum is σ = 16146814832. Its totient is φ = 8073407412.

The previous prime is 12110111107. The next prime is 12110111141. The reversal of 12110111121 is 12111101121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 12110111121 - 2¹⁰ = 12110110097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12110111097 and 12110111106.

It is not an unprimeable number, because it can be changed into a prime (12110111141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2018351851 + ... + 2018351856.

It is an arithmetic number, because the mean of its divisors is an integer number (4036703708).

Almost surely, 2^12110111121 is an apocalyptic number.

It is an amenable number.

12110111121 is a deficient number, since it is larger than the sum of its proper divisors (4036703711).

12110111121 is an equidigital number, since it uses as much as digits as its factorization.

12110111121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4036703710.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 12110111121 its reverse (12111101121), we get a palindrome (24221212242).

The spelling of 12110111121 in words is "twelve billion, one hundred ten million, one hundred eleven thousand, one hundred twenty-one".