12111411121 has 4 divisors (see below), whose sum is σ = 12129734644. Its totient is φ = 12093087600.

The previous prime is 12111411101. The next prime is 12111411127.

It is a happy number.

12111411121 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4838732721 + 7272678400 = 69561^2 + 85280^2 .

It is a cyclic number.

It is not a de Polignac number, because 12111411121 - 2¹⁵ = 12111378353 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12111411095 and 12111411104.

It is not an unprimeable number, because it can be changed into a prime (12111411127) 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, 9160770 + ... + 9162091.

It is an arithmetic number, because the mean of its divisors is an integer number (3032433661).

Almost surely, 2^12111411121 is an apocalyptic number.

It is an amenable number.

12111411121 is a deficient number, since it is larger than the sum of its proper divisors (18323523).

12111411121 is an equidigital number, since it uses as much as digits as its factorization.

12111411121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18323522.

The product of its digits is 16, while the sum is 16.

The spelling of 12111411121 in words is "twelve billion, one hundred eleven million, four hundred eleven thousand, one hundred twenty-one".