12301019981 has 2 divisors, whose sum is σ = 12301019982. Its totient is φ = 12301019980.

The previous prime is 12301019959. The next prime is 12301020047. The reversal of 12301019981 is 18991010321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8856503881 + 3444516100 = 94109^2 + 58690^2 .

It is a cyclic number.

It is not a de Polignac number, because 12301019981 - 2¹⁸ = 12300757837 is a prime.

It is a super-2 number, since 2×12301019981² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12301013981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6150509990 + 6150509991.

It is an arithmetic number, because the mean of its divisors is an integer number (6150509991).

Almost surely, 2^12301019981 is an apocalyptic number.

It is an amenable number.

12301019981 is a deficient number, since it is larger than the sum of its proper divisors (1).

12301019981 is an equidigital number, since it uses as much as digits as its factorization.

12301019981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 35.

The spelling of 12301019981 in words is "twelve billion, three hundred one million, nineteen thousand, nine hundred eighty-one".