12980321 has 2 divisors, whose sum is σ = 12980322. Its totient is φ = 12980320.

The previous prime is 12980311. The next prime is 12980327. The reversal of 12980321 is 12308921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7980625 + 4999696 = 2825^2 + 2236^2 .

It is an emirp because it is prime and its reverse (12308921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12980321 - 2¹⁸ = 12718177 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12980327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6490160 + 6490161.

It is an arithmetic number, because the mean of its divisors is an integer number (6490161).

Almost surely, 2^12980321 is an apocalyptic number.

It is an amenable number.

12980321 is a deficient number, since it is larger than the sum of its proper divisors (1).

12980321 is an equidigital number, since it uses as much as digits as its factorization.

12980321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 12980321 is about 3602.8212556273. The cubic root of 12980321 is about 235.0147629174.

The spelling of 12980321 in words is "twelve million, nine hundred eighty thousand, three hundred twenty-one".