12065333261521 has 2 divisors, whose sum is σ = 12065333261522. Its totient is φ = 12065333261520.

The previous prime is 12065333261497. The next prime is 12065333261593. The reversal of 12065333261521 is 12516233356021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11603152195600 + 462181065921 = 3406340^2 + 679839^2 .

It is a cyclic number.

It is not a de Polignac number, because 12065333261521 - 2¹⁹ = 12065332737233 is a prime.

It is not a weakly prime, because it can be changed into another prime (12065333267521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6032666630760 + 6032666630761.

It is an arithmetic number, because the mean of its divisors is an integer number (6032666630761).

Almost surely, 2^{12065333261521} is an apocalyptic number.

It is an amenable number.

12065333261521 is a deficient number, since it is larger than the sum of its proper divisors (1).

12065333261521 is an equidigital number, since it uses as much as digits as its factorization.

12065333261521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 194400, while the sum is 40.

The spelling of 12065333261521 in words is "twelve trillion, sixty-five billion, three hundred thirty-three million, two hundred sixty-one thousand, five hundred twenty-one".