12043301321981 has 2 divisors, whose sum is σ = 12043301321982. Its totient is φ = 12043301321980.

The previous prime is 12043301321971. The next prime is 12043301322001. The reversal of 12043301321981 is 18912310334021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8766875513881 + 3276425808100 = 2960891^2 + 1810090^2 .

It is a cyclic number.

It is not a de Polignac number, because 12043301321981 - 2¹⁸ = 12043301059837 is a prime.

It is a super-2 number, since 2×12043301321981² (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 (12043301321971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6021650660990 + 6021650660991.

It is an arithmetic number, because the mean of its divisors is an integer number (6021650660991).

Almost surely, 2^{12043301321981} is an apocalyptic number.

It is an amenable number.

12043301321981 is a deficient number, since it is larger than the sum of its proper divisors (1).

12043301321981 is an equidigital number, since it uses as much as digits as its factorization.

12043301321981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 38.

The spelling of 12043301321981 in words is "twelve trillion, forty-three billion, three hundred one million, three hundred twenty-one thousand, nine hundred eighty-one".