12208503 has 4 divisors (see below), whose sum is σ = 16278008. Its totient is φ = 8139000.

The previous prime is 12208489. The next prime is 12208519. The reversal of 12208503 is 30580221.

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

It is not a de Polignac number, because 12208503 - 2⁶ = 12208439 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12208503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12208543) 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, 2034748 + ... + 2034753.

It is an arithmetic number, because the mean of its divisors is an integer number (4069502).

Almost surely, 2^12208503 is an apocalyptic number.

12208503 is a deficient number, since it is larger than the sum of its proper divisors (4069505).

12208503 is an equidigital number, since it uses as much as digits as its factorization.

12208503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4069504.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 12208503 is about 3494.0668282104. The cubic root of 12208503 is about 230.2612217944.

Adding to 12208503 its reverse (30580221), we get a palindrome (42788724).

The spelling of 12208503 in words is "twelve million, two hundred eight thousand, five hundred three".