12212603 has 4 divisors (see below), whose sum is σ = 13152048. Its totient is φ = 11273160.

The previous prime is 12212597. The next prime is 12212623. The reversal of 12212603 is 30621221.

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 12212603 - 2⁶ = 12212539 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12212623) 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, 469703 + ... + 469728.

It is an arithmetic number, because the mean of its divisors is an integer number (3288012).

Almost surely, 2^12212603 is an apocalyptic number.

12212603 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12212603 is a deficient number, since it is larger than the sum of its proper divisors (939445).

12212603 is an equidigital number, since it uses as much as digits as its factorization.

12212603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 939444.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 12212603 is about 3494.6534878297. The cubic root of 12212603 is about 230.2869952340.

Adding to 12212603 its reverse (30621221), we get a palindrome (42833824).

The spelling of 12212603 in words is "twelve million, two hundred twelve thousand, six hundred three".