12001311020003 has 4 divisors (see below), whose sum is σ = 12001317965448. Its totient is φ = 12001304074560.

The previous prime is 12001311019963. The next prime is 12001311020087. The reversal of 12001311020003 is 30002011310021.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 12001311020003 - 2⁶ = 12001311019939 is a prime.

It is a super-2 number, since 2×12001311020003² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12001311020003.

It is not an unprimeable number, because it can be changed into a prime (12001311020603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1373600 + ... + 5088162.

It is an arithmetic number, because the mean of its divisors is an integer number (3000329491362).

Almost surely, 2^{12001311020003} is an apocalyptic number.

12001311020003 is a deficient number, since it is larger than the sum of its proper divisors (6945445).

12001311020003 is an equidigital number, since it uses as much as digits as its factorization.

12001311020003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6945444.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 12001311020003 its reverse (30002011310021), we get a palindrome (42003322330024).

The spelling of 12001311020003 in words is "twelve trillion, one billion, three hundred eleven million, twenty thousand, three".