12321002189 has 2 divisors, whose sum is σ = 12321002190. Its totient is φ = 12321002188.

The previous prime is 12321002159. The next prime is 12321002237. The reversal of 12321002189 is 98120012321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12215775625 + 105226564 = 110525^2 + 10258^2 .

It is a cyclic number.

It is not a de Polignac number, because 12321002189 - 2⁸ = 12321001933 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12321002129) 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, 6160501094 + 6160501095.

It is an arithmetic number, because the mean of its divisors is an integer number (6160501095).

Almost surely, 2^12321002189 is an apocalyptic number.

It is an amenable number.

12321002189 is a deficient number, since it is larger than the sum of its proper divisors (1).

12321002189 is an equidigital number, since it uses as much as digits as its factorization.

12321002189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 29.

The spelling of 12321002189 in words is "twelve billion, three hundred twenty-one million, two thousand, one hundred eighty-nine".