11562521315021 has 2 divisors, whose sum is σ = 11562521315022. Its totient is φ = 11562521315020.

The previous prime is 11562521314987. The next prime is 11562521315077. The reversal of 11562521315021 is 12051312526511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9637212436996 + 1925308878025 = 3104386^2 + 1387555^2 .

It is a cyclic number.

It is not a de Polignac number, because 11562521315021 - 2¹⁴ = 11562521298637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11562521315621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5781260657510 + 5781260657511.

It is an arithmetic number, because the mean of its divisors is an integer number (5781260657511).

Almost surely, 2^{11562521315021} is an apocalyptic number.

It is an amenable number.

11562521315021 is a deficient number, since it is larger than the sum of its proper divisors (1).

11562521315021 is an equidigital number, since it uses as much as digits as its factorization.

11562521315021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18000, while the sum is 35.

The spelling of 11562521315021 in words is "eleven trillion, five hundred sixty-two billion, five hundred twenty-one million, three hundred fifteen thousand, twenty-one".