12102200521 has 2 divisors, whose sum is σ = 12102200522. Its totient is φ = 12102200520.

The previous prime is 12102200497. The next prime is 12102200557. The reversal of 12102200521 is 12500220121.

It is a happy number.

12102200521 is digitally balanced in base 2, 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., 10473270921 + 1628929600 = 102339^2 + 40360^2 .

It is a cyclic number.

It is not a de Polignac number, because 12102200521 - 2⁹ = 12102200009 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12102200495 and 12102200504.

It is not a weakly prime, because it can be changed into another prime (12102203521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6051100260 + 6051100261.

It is an arithmetic number, because the mean of its divisors is an integer number (6051100261).

Almost surely, 2^12102200521 is an apocalyptic number.

It is an amenable number.

12102200521 is a deficient number, since it is larger than the sum of its proper divisors (1).

12102200521 is an equidigital number, since it uses as much as digits as its factorization.

12102200521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80, while the sum is 16.

Adding to 12102200521 its reverse (12500220121), we get a palindrome (24602420642).

The spelling of 12102200521 in words is "twelve billion, one hundred two million, two hundred thousand, five hundred twenty-one".