12104440161 has 32 divisors (see below), whose sum is σ = 18381219840. Its totient is φ = 7013529600.

The previous prime is 12104440151. The next prime is 12104440237. The reversal of 12104440161 is 16104440121.

12104440161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12104440161 - 2⁵ = 12104440129 is a prime.

It is a super-2 number, since 2×12104440161² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12104440151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2699041 + ... + 2703521.

It is an arithmetic number, because the mean of its divisors is an integer number (574413120).

Almost surely, 2^12104440161 is an apocalyptic number.

12104440161 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12104440161 is a deficient number, since it is larger than the sum of its proper divisors (6276779679).

12104440161 is a wasteful number, since it uses less digits than its factorization.

12104440161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8077.

The product of its (nonzero) digits is 768, while the sum is 24.

Adding to 12104440161 its reverse (16104440121), we get a palindrome (28208880282).

The spelling of 12104440161 in words is "twelve billion, one hundred four million, four hundred forty thousand, one hundred sixty-one".