12389290321 has 2 divisors, whose sum is σ = 12389290322. Its totient is φ = 12389290320.

The previous prime is 12389290307. The next prime is 12389290351. The reversal of 12389290321 is 12309298321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7807489600 + 4581800721 = 88360^2 + 67689^2 .

It is an emirp because it is prime and its reverse (12309298321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12389290321 - 2²³ = 12380901713 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (12389290351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6194645160 + 6194645161.

It is an arithmetic number, because the mean of its divisors is an integer number (6194645161).

Almost surely, 2^12389290321 is an apocalyptic number.

It is an amenable number.

12389290321 is a deficient number, since it is larger than the sum of its proper divisors (1).

12389290321 is an equidigital number, since it uses as much as digits as its factorization.

12389290321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 40.

The spelling of 12389290321 in words is "twelve billion, three hundred eighty-nine million, two hundred ninety thousand, three hundred twenty-one".