12441113121 has 4 divisors (see below), whose sum is σ = 16588150832. Its totient is φ = 8294075412.

The previous prime is 12441113119. The next prime is 12441113131. The reversal of 12441113121 is 12131114421.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12131114421 = 3 ⋅4043704807.

It is not a de Polignac number, because 12441113121 - 2¹ = 12441113119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12441113131) 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, 2073518851 + ... + 2073518856.

It is an arithmetic number, because the mean of its divisors is an integer number (4147037708).

Almost surely, 2^12441113121 is an apocalyptic number.

It is an amenable number.

12441113121 is a deficient number, since it is larger than the sum of its proper divisors (4147037711).

12441113121 is an equidigital number, since it uses as much as digits as its factorization.

12441113121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4147037710.

The product of its digits is 192, while the sum is 21.

Adding to 12441113121 its reverse (12131114421), we get a palindrome (24572227542).

The spelling of 12441113121 in words is "twelve billion, four hundred forty-one million, one hundred thirteen thousand, one hundred twenty-one".