12105140443 has 24 divisors (see below), whose sum is σ = 13458357248. Its totient is φ = 10879110000.

The previous prime is 12105140441. The next prime is 12105140447. The reversal of 12105140443 is 34404150121.

12105140443 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 12105140443 - 2¹ = 12105140441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12105140441) 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 23 ways as a sum of consecutive naturals, for example, 4072948 + ... + 4075918.

Almost surely, 2^12105140443 is an apocalyptic number.

12105140443 is a deficient number, since it is larger than the sum of its proper divisors (1353216805).

12105140443 is a wasteful number, since it uses less digits than its factorization.

12105140443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3367 (or 3356 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 12105140443 its reverse (34404150121), we get a palindrome (46509290564).

The spelling of 12105140443 in words is "twelve billion, one hundred five million, one hundred forty thousand, four hundred forty-three".