12466621016281 has 2 divisors, whose sum is σ = 12466621016282. Its totient is φ = 12466621016280.

The previous prime is 12466621016279. The next prime is 12466621016299. The reversal of 12466621016281 is 18261012666421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7907793926400 + 4558827089881 = 2812080^2 + 2135141^2 .

It is a cyclic number.

It is not a de Polignac number, because 12466621016281 - 2¹ = 12466621016279 is a prime.

It is a super-2 number, since 2×12466621016281² (a number of 27 digits) contains 22 as substring.

Together with 12466621016279, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (12466621016981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6233310508140 + 6233310508141.

It is an arithmetic number, because the mean of its divisors is an integer number (6233310508141).

Almost surely, 2^{12466621016281} is an apocalyptic number.

It is an amenable number.

12466621016281 is a deficient number, since it is larger than the sum of its proper divisors (1).

12466621016281 is an equidigital number, since it uses as much as digits as its factorization.

12466621016281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 331776, while the sum is 46.

The spelling of 12466621016281 in words is "twelve trillion, four hundred sixty-six billion, six hundred twenty-one million, sixteen thousand, two hundred eighty-one".