12001231011203 has 64 divisors (see below), whose sum is σ = 14735961096192. Its totient is φ = 9552736892160.

The previous prime is 12001231011199. The next prime is 12001231011283. The reversal of 12001231011203 is 30211013210021.

It is not a de Polignac number, because 12001231011203 - 2² = 12001231011199 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12001231011283) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 536548526 + ... + 536570892.

It is an arithmetic number, because the mean of its divisors is an integer number (230249392128).

Almost surely, 2^{12001231011203} is an apocalyptic number.

12001231011203 is a deficient number, since it is larger than the sum of its proper divisors (2734730084989).

12001231011203 is a wasteful number, since it uses less digits than its factorization.

12001231011203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23184.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 12001231011203 its reverse (30211013210021), we get a palindrome (42212244221224).

The spelling of 12001231011203 in words is "twelve trillion, one billion, two hundred thirty-one million, eleven thousand, two hundred three".