12112003 has 4 divisors (see below), whose sum is σ = 12118968. Its totient is φ = 12105040.

The previous prime is 12111997. The next prime is 12112013. The reversal of 12112003 is 30021121.

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 12112003 - 2¹³ = 12103811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12112013) 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, 1575 + ... + 5167.

It is an arithmetic number, because the mean of its divisors is an integer number (3029742).

Almost surely, 2^12112003 is an apocalyptic number.

12112003 is a deficient number, since it is larger than the sum of its proper divisors (6965).

12112003 is an equidigital number, since it uses as much as digits as its factorization.

12112003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6964.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 12112003 is about 3480.2303084710. The cubic root of 12112003 is about 229.6529295896.

Adding to 12112003 its reverse (30021121), we get a palindrome (42133124).

The spelling of 12112003 in words is "twelve million, one hundred twelve thousand, three".