12323533521209 has 4 divisors (see below), whose sum is σ = 12323540574180. Its totient is φ = 12323526468240.

The previous prime is 12323533521193. The next prime is 12323533521223. The reversal of 12323533521209 is 90212533532321.

12323533521209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 7184570964025 + 5138962557184 = 2680405^2 + 2266928^2 .

It is a cyclic number.

It is not a de Polignac number, because 12323533521209 - 2⁴ = 12323533521193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12323533520209) 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, 1259987 + ... + 5121975.

It is an arithmetic number, because the mean of its divisors is an integer number (3080885143545).

Almost surely, 2^{12323533521209} is an apocalyptic number.

It is an amenable number.

12323533521209 is a deficient number, since it is larger than the sum of its proper divisors (7052971).

12323533521209 is an equidigital number, since it uses as much as digits as its factorization.

12323533521209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7052970.

The product of its (nonzero) digits is 291600, while the sum is 41.

The spelling of 12323533521209 in words is "twelve trillion, three hundred twenty-three billion, five hundred thirty-three million, five hundred twenty-one thousand, two hundred nine".