12721363 has 2 divisors, whose sum is σ = 12721364. Its totient is φ = 12721362.

The previous prime is 12721361. The next prime is 12721391. The reversal of 12721363 is 36312721.

It is a weak prime.

It is an emirp because it is prime and its reverse (36312721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12721363 - 2¹ = 12721361 is a prime.

Together with 12721361, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (12721361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6360681 + 6360682.

It is an arithmetic number, because the mean of its divisors is an integer number (6360682).

Almost surely, 2^12721363 is an apocalyptic number.

12721363 is a deficient number, since it is larger than the sum of its proper divisors (1).

12721363 is an equidigital number, since it uses as much as digits as its factorization.

12721363 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1512, while the sum is 25.

The square root of 12721363 is about 3566.7019780183. The cubic root of 12721363 is about 233.4414014146.

The spelling of 12721363 in words is "twelve million, seven hundred twenty-one thousand, three hundred sixty-three".