12003112123 has 8 divisors (see below), whose sum is σ = 12782644128. Its totient is φ = 11231743104.

The previous prime is 12003112111. The next prime is 12003112139. The reversal of 12003112123 is 32121130021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12003112123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12003112097 and 12003112106.

It is not an unprimeable number, because it can be changed into a prime (12003112183) 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, 2037711 + ... + 2043592.

It is an arithmetic number, because the mean of its divisors is an integer number (1597830516).

Almost surely, 2^12003112123 is an apocalyptic number.

12003112123 is a deficient number, since it is larger than the sum of its proper divisors (779532005).

12003112123 is a wasteful number, since it uses less digits than its factorization.

12003112123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4081493.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 12003112123 its reverse (32121130021), we get a palindrome (44124242144).

The spelling of 12003112123 in words is "twelve billion, three million, one hundred twelve thousand, one hundred twenty-three".