12324123821 has 2 divisors, whose sum is σ = 12324123822. Its totient is φ = 12324123820.

The previous prime is 12324123809. The next prime is 12324123863. The reversal of 12324123821 is 12832142321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12324108196 + 15625 = 111014^2 + 125^2 .

It is a cyclic number.

It is not a de Polignac number, because 12324123821 - 2³⁰ = 11250381997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12324120821) 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, 6162061910 + 6162061911.

It is an arithmetic number, because the mean of its divisors is an integer number (6162061911).

Almost surely, 2^12324123821 is an apocalyptic number.

It is an amenable number.

12324123821 is a deficient number, since it is larger than the sum of its proper divisors (1).

12324123821 is an equidigital number, since it uses as much as digits as its factorization.

12324123821 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4608, while the sum is 29.

The spelling of 12324123821 in words is "twelve billion, three hundred twenty-four million, one hundred twenty-three thousand, eight hundred twenty-one".