12198503 has 4 divisors (see below), whose sum is σ = 12916080. Its totient is φ = 11480928.

The previous prime is 12198499. The next prime is 12198509. The reversal of 12198503 is 30589121.

12198503 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 not a de Polignac number, because 12198503 - 2² = 12198499 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 (12198509) 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, 358763 + ... + 358796.

It is an arithmetic number, because the mean of its divisors is an integer number (3229020).

Almost surely, 2^12198503 is an apocalyptic number.

12198503 is a deficient number, since it is larger than the sum of its proper divisors (717577).

12198503 is an equidigital number, since it uses as much as digits as its factorization.

12198503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 717576.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 12198503 is about 3492.6355378138. The cubic root of 12198503 is about 230.1983355367.

The spelling of 12198503 in words is "twelve million, one hundred ninety-eight thousand, five hundred three".