12003001003 has 4 divisors (see below), whose sum is σ = 13717715440. Its totient is φ = 10288286568.

The previous prime is 12003000991. The next prime is 12003001019. The reversal of 12003001003 is 30010030021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30010030021 = 179 ⋅167653799.

It is not a de Polignac number, because 12003001003 - 2⁹ = 12003000491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12003061003) 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 3 ways as a sum of consecutive naturals, for example, 857357208 + ... + 857357221.

It is an arithmetic number, because the mean of its divisors is an integer number (3429428860).

Almost surely, 2^12003001003 is an apocalyptic number.

12003001003 is a deficient number, since it is larger than the sum of its proper divisors (1714714437).

12003001003 is an equidigital number, since it uses as much as digits as its factorization.

12003001003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1714714436.

The product of its (nonzero) digits is 18, while the sum is 10.

Adding to 12003001003 its reverse (30010030021), we get a palindrome (42013031024).

The spelling of 12003001003 in words is "twelve billion, three million, one thousand, three".