12113301521 has 2 divisors, whose sum is σ = 12113301522. Its totient is φ = 12113301520.

The previous prime is 12113301517. The next prime is 12113301583. The reversal of 12113301521 is 12510331121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12094500625 + 18800896 = 109975^2 + 4336^2 .

It is a cyclic number.

It is not a de Polignac number, because 12113301521 - 2² = 12113301517 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12113301493 and 12113301502.

It is not a weakly prime, because it can be changed into another prime (12113301511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6056650760 + 6056650761.

It is an arithmetic number, because the mean of its divisors is an integer number (6056650761).

Almost surely, 2^12113301521 is an apocalyptic number.

It is an amenable number.

12113301521 is a deficient number, since it is larger than the sum of its proper divisors (1).

12113301521 is an equidigital number, since it uses as much as digits as its factorization.

12113301521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 180, while the sum is 20.

Adding to 12113301521 its reverse (12510331121), we get a palindrome (24623632642).

The spelling of 12113301521 in words is "twelve billion, one hundred thirteen million, three hundred one thousand, five hundred twenty-one".