12003011103 has 4 divisors (see below), whose sum is σ = 16004014808. Its totient is φ = 8002007400.

The previous prime is 12003011021. The next prime is 12003011107. The reversal of 12003011103 is 30111030021.

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

It is not a de Polignac number, because 12003011103 - 2¹⁰ = 12003010079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12003011107) 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, 2000501848 + ... + 2000501853.

It is an arithmetic number, because the mean of its divisors is an integer number (4001003702).

Almost surely, 2^12003011103 is an apocalyptic number.

12003011103 is a deficient number, since it is larger than the sum of its proper divisors (4001003705).

12003011103 is an equidigital number, since it uses as much as digits as its factorization.

12003011103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4001003704.

The product of its (nonzero) digits is 18, while the sum is 12.

Adding to 12003011103 its reverse (30111030021), we get a palindrome (42114041124).

The spelling of 12003011103 in words is "twelve billion, three million, eleven thousand, one hundred three".