12102003 has 6 divisors (see below), whose sum is σ = 17480684. Its totient is φ = 8067996.

The previous prime is 12102001. The next prime is 12102017. The reversal of 12102003 is 30020121.

It is a happy number.

It is not a de Polignac number, because 12102003 - 2¹ = 12102001 is a prime.

It is a super-2 number, since 2×12102003² = 292916953224018, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 1344667 = 12102003 / (1 + 2 + 1 + 0 + 2 + 0 + 0 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12102001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 672325 + ... + 672342.

Almost surely, 2^12102003 is an apocalyptic number.

12102003 is a deficient number, since it is larger than the sum of its proper divisors (5378681).

12102003 is a wasteful number, since it uses less digits than its factorization.

12102003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1344673 (or 1344670 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 12102003 is about 3478.7933252782. The cubic root of 12102003 is about 229.5897096138.

Adding to 12102003 its reverse (30020121), we get a palindrome (42122124).

The spelling of 12102003 in words is "twelve million, one hundred two thousand, three".