13321302112981 has 2 divisors, whose sum is σ = 13321302112982. Its totient is φ = 13321302112980.

The previous prime is 13321302112961. The next prime is 13321302113057. The reversal of 13321302112981 is 18921120312331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12888035380081 + 433266732900 = 3589991^2 + 658230^2 .

It is a cyclic number.

It is not a de Polignac number, because 13321302112981 - 2¹⁷ = 13321301981909 is a prime.

It is a super-2 number, since 2×13321302112981² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13321302112981.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13321302112961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6660651056490 + 6660651056491.

It is an arithmetic number, because the mean of its divisors is an integer number (6660651056491).

Almost surely, 2^{13321302112981} is an apocalyptic number.

It is an amenable number.

13321302112981 is a deficient number, since it is larger than the sum of its proper divisors (1).

13321302112981 is an equidigital number, since it uses as much as digits as its factorization.

13321302112981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 37.

The spelling of 13321302112981 in words is "thirteen trillion, three hundred twenty-one billion, three hundred two million, one hundred twelve thousand, nine hundred eighty-one".