12321012003 has 4 divisors (see below), whose sum is σ = 16428016008. Its totient is φ = 8214008000.

The previous prime is 12321011999. The next prime is 12321012047. The reversal of 12321012003 is 30021012321.

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 12321012003 - 2² = 12321011999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12321012073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2053501998 + ... + 2053502003.

It is an arithmetic number, because the mean of its divisors is an integer number (4107004002).

Almost surely, 2^12321012003 is an apocalyptic number.

12321012003 is a deficient number, since it is larger than the sum of its proper divisors (4107004005).

12321012003 is an equidigital number, since it uses as much as digits as its factorization.

12321012003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4107004004.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 12321012003 its reverse (30021012321), we get a palindrome (42342024324).

The spelling of 12321012003 in words is "twelve billion, three hundred twenty-one million, twelve thousand, three".