12081529 has 2 divisors, whose sum is σ = 12081530. Its totient is φ = 12081528.

The previous prime is 12081527. The next prime is 12081533. The reversal of 12081529 is 92518021.

12081529 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8714304 + 3367225 = 2952^2 + 1835^2 .

It is an emirp because it is prime and its reverse (92518021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12081529 - 2¹ = 12081527 is a prime.

Together with 12081527, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 12081497 and 12081506.

It is not a weakly prime, because it can be changed into another prime (12081523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6040764 + 6040765.

It is an arithmetic number, because the mean of its divisors is an integer number (6040765).

Almost surely, 2^12081529 is an apocalyptic number.

It is an amenable number.

12081529 is a deficient number, since it is larger than the sum of its proper divisors (1).

12081529 is an equidigital number, since it uses as much as digits as its factorization.

12081529 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 12081529 is about 3475.8493925946. The cubic root of 12081529 is about 229.4601643084.

The spelling of 12081529 in words is "twelve million, eighty-one thousand, five hundred twenty-nine".