12321345203 has 4 divisors (see below), whose sum is σ = 12857055888. Its totient is φ = 11785634520.

The previous prime is 12321345193. The next prime is 12321345227. The reversal of 12321345203 is 30254312321.

It is a happy number.

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 12321345203 - 2¹⁸ = 12321083059 is a prime.

It is a super-2 number, since 2×12321345203² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12321345703) 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, 267855308 + ... + 267855353.

It is an arithmetic number, because the mean of its divisors is an integer number (3214263972).

Almost surely, 2^12321345203 is an apocalyptic number.

12321345203 is a deficient number, since it is larger than the sum of its proper divisors (535710685).

12321345203 is an equidigital number, since it uses as much as digits as its factorization.

12321345203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535710684.

The product of its (nonzero) digits is 4320, while the sum is 26.

Adding to 12321345203 its reverse (30254312321), we get a palindrome (42575657524).

The spelling of 12321345203 in words is "twelve billion, three hundred twenty-one million, three hundred forty-five thousand, two hundred three".