12001001003 has 8 divisors (see below), whose sum is σ = 12052869696. Its totient is φ = 11949165000.

The previous prime is 12001000997. The next prime is 12001001011. The reversal of 12001001003 is 30010010021.

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 12001001003 - 2⁸ = 12001000747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12001001053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 980600 + ... + 992762.

It is an arithmetic number, because the mean of its divisors is an integer number (1506608712).

Almost surely, 2^12001001003 is an apocalyptic number.

12001001003 is a deficient number, since it is larger than the sum of its proper divisors (51868693).

12001001003 is a wasteful number, since it uses less digits than its factorization.

12001001003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16345.

The product of its (nonzero) digits is 6, while the sum is 8.

Adding to 12001001003 its reverse (30010010021), we get a palindrome (42011011024).

The spelling of 12001001003 in words is "twelve billion, one million, one thousand, three".