12321999929 has 2 divisors, whose sum is σ = 12321999930. Its totient is φ = 12321999928.

The previous prime is 12321999923. The next prime is 12321999953. The reversal of 12321999929 is 92999912321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8639330704 + 3682669225 = 92948^2 + 60685^2 .

It is an emirp because it is prime and its reverse (92999912321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12321999929 - 2³² = 8027032633 is a prime.

It is not a weakly prime, because it can be changed into another prime (12321999923) 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, 6160999964 + 6160999965.

It is an arithmetic number, because the mean of its divisors is an integer number (6160999965).

Almost surely, 2^12321999929 is an apocalyptic number.

It is an amenable number.

12321999929 is a deficient number, since it is larger than the sum of its proper divisors (1).

12321999929 is an equidigital number, since it uses as much as digits as its factorization.

12321999929 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1417176, while the sum is 56.

The spelling of 12321999929 in words is "twelve billion, three hundred twenty-one million, nine hundred ninety-nine thousand, nine hundred twenty-nine".