12143020039981 has 2 divisors, whose sum is σ = 12143020039982. Its totient is φ = 12143020039980.

The previous prime is 12143020039949. The next prime is 12143020039999. The reversal of 12143020039981 is 18993002034121.

12143020039981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7176210534025 + 4966809505956 = 2678845^2 + 2228634^2 .

It is a cyclic number.

It is not a de Polignac number, because 12143020039981 - 2⁵ = 12143020039949 is a prime.

It is a super-2 number, since 2×12143020039981² (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 (12143020039681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6071510019990 + 6071510019991.

It is an arithmetic number, because the mean of its divisors is an integer number (6071510019991).

Almost surely, 2^{12143020039981} is an apocalyptic number.

It is an amenable number.

12143020039981 is a deficient number, since it is larger than the sum of its proper divisors (1).

12143020039981 is an equidigital number, since it uses as much as digits as its factorization.

12143020039981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 93312, while the sum is 43.

The spelling of 12143020039981 in words is "twelve trillion, one hundred forty-three billion, twenty million, thirty-nine thousand, nine hundred eighty-one".