12001231103203 has 4 divisors (see below), whose sum is σ = 12523023759888. Its totient is φ = 11479438446520.

The previous prime is 12001231103189. The next prime is 12001231103233. The reversal of 12001231103203 is 30230113210021.

12001231103203 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 12001231103203 - 2¹³ = 12001231095011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12001231103233) 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, 260896328308 + ... + 260896328353.

It is an arithmetic number, because the mean of its divisors is an integer number (3130755939972).

Almost surely, 2^{12001231103203} is an apocalyptic number.

12001231103203 is a deficient number, since it is larger than the sum of its proper divisors (521792656685).

12001231103203 is an equidigital number, since it uses as much as digits as its factorization.

12001231103203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521792656684.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 12001231103203 its reverse (30230113210021), we get a palindrome (42231344313224).

The spelling of 12001231103203 in words is "twelve trillion, one billion, two hundred thirty-one million, one hundred three thousand, two hundred three".