12043010981 has 2 divisors, whose sum is σ = 12043010982. Its totient is φ = 12043010980.

The previous prime is 12043010963. The next prime is 12043011023. The reversal of 12043010981 is 18901034021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11107262881 + 935748100 = 105391^2 + 30590^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12043010981 is a prime.

It is a super-2 number, since 2×12043010981² (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 (12043019981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6021505490 + 6021505491.

It is an arithmetic number, because the mean of its divisors is an integer number (6021505491).

Almost surely, 2^12043010981 is an apocalyptic number.

It is an amenable number.

12043010981 is a deficient number, since it is larger than the sum of its proper divisors (1).

12043010981 is an equidigital number, since it uses as much as digits as its factorization.

12043010981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 29.

The spelling of 12043010981 in words is "twelve billion, forty-three million, ten thousand, nine hundred eighty-one".