12228503 has 4 divisors (see below), whose sum is σ = 13975440. Its totient is φ = 10481568.

The previous prime is 12228493. The next prime is 12228527. The reversal of 12228503 is 30582221.

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 12228503 - 2⁶ = 12228439 is a prime.

It is a super-4 number, since 4×12228503⁴ (a number of 29 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12228553) 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, 873458 + ... + 873471.

It is an arithmetic number, because the mean of its divisors is an integer number (3493860).

Almost surely, 2^12228503 is an apocalyptic number.

12228503 is a deficient number, since it is larger than the sum of its proper divisors (1746937).

12228503 is an equidigital number, since it uses as much as digits as its factorization.

12228503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1746936.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 12228503 is about 3496.9276515250. The cubic root of 12228503 is about 230.3868913641.

The spelling of 12228503 in words is "twelve million, two hundred twenty-eight thousand, five hundred three".