12116503 has 4 divisors (see below), whose sum is σ = 13847440. Its totient is φ = 10385568.

The previous prime is 12116483. The next prime is 12116521. The reversal of 12116503 is 30561121.

12116503 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12116503 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 (12116593) 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, 865458 + ... + 865471.

It is an arithmetic number, because the mean of its divisors is an integer number (3461860).

Almost surely, 2^12116503 is an apocalyptic number.

12116503 is a deficient number, since it is larger than the sum of its proper divisors (1730937).

12116503 is an equidigital number, since it uses as much as digits as its factorization.

12116503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1730936.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 12116503 is about 3480.8767573702. The cubic root of 12116503 is about 229.6813672264.

Adding to 12116503 its reverse (30561121), we get a palindrome (42677624).

The spelling of 12116503 in words is "twelve million, one hundred sixteen thousand, five hundred three".