12105605333803 has 8 divisors (see below), whose sum is σ = 12138435054720. Its totient is φ = 12072818003520.

The previous prime is 12105605333761. The next prime is 12105605333863. The reversal of 12105605333803 is 30833350650121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12105605333803 - 2¹⁷ = 12105605202731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12105605333863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10025698 + ... + 11168071.

It is an arithmetic number, because the mean of its divisors is an integer number (1517304381840).

Almost surely, 2^{12105605333803} is an apocalyptic number.

12105605333803 is a deficient number, since it is larger than the sum of its proper divisors (32829720917).

12105605333803 is an equidigital number, since it uses as much as digits as its factorization.

12105605333803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21195317.

The product of its (nonzero) digits is 194400, while the sum is 40.

Adding to 12105605333803 its reverse (30833350650121), we get a palindrome (42938955983924).

The spelling of 12105605333803 in words is "twelve trillion, one hundred five billion, six hundred five million, three hundred thirty-three thousand, eight hundred three".