12321312203 has 2 divisors, whose sum is σ = 12321312204. Its totient is φ = 12321312202.

The previous prime is 12321312191. The next prime is 12321312229. The reversal of 12321312203 is 30221312321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12321312203 - 2²⁴ = 12304534987 is a prime.

It is not a weakly prime, because it can be changed into another prime (12321312293) 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 as a sum of consecutive naturals, namely, 6160656101 + 6160656102.

It is an arithmetic number, because the mean of its divisors is an integer number (6160656102).

Almost surely, 2^12321312203 is an apocalyptic number.

12321312203 is a deficient number, since it is larger than the sum of its proper divisors (1).

12321312203 is an equidigital number, since it uses as much as digits as its factorization.

12321312203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 12321312203 its reverse (30221312321), we get a palindrome (42542624524).

The spelling of 12321312203 in words is "twelve billion, three hundred twenty-one million, three hundred twelve thousand, two hundred three".