12400322119981 has 2 divisors, whose sum is σ = 12400322119982. Its totient is φ = 12400322119980.

The previous prime is 12400322119967. The next prime is 12400322120063. The reversal of 12400322119981 is 18991122300421.

12400322119981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11303346582025 + 1096975537956 = 3362045^2 + 1047366^2 .

It is a cyclic number.

It is not a de Polignac number, because 12400322119981 - 2⁹ = 12400322119469 is a prime.

It is a super-2 number, since 2×12400322119981² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12400322119901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6200161059990 + 6200161059991.

It is an arithmetic number, because the mean of its divisors is an integer number (6200161059991).

Almost surely, 2^{12400322119981} is an apocalyptic number.

It is an amenable number.

12400322119981 is a deficient number, since it is larger than the sum of its proper divisors (1).

12400322119981 is an equidigital number, since it uses as much as digits as its factorization.

12400322119981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62208, while the sum is 43.

The spelling of 12400322119981 in words is "twelve trillion, four hundred billion, three hundred twenty-two million, one hundred nineteen thousand, nine hundred eighty-one".