12302013221 has 4 divisors (see below), whose sum is σ = 12534126732. Its totient is φ = 12069899712.

The previous prime is 12302013187. The next prime is 12302013253. The reversal of 12302013221 is 12231020321.

12302013221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3967236196 + 8334777025 = 62986^2 + 91295^2 .

It is a cyclic number.

It is not a de Polignac number, because 12302013221 - 2¹⁰ = 12302012197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12302013221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12302013271) 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 in 3 ways as a sum of consecutive naturals, for example, 116056676 + ... + 116056781.

It is an arithmetic number, because the mean of its divisors is an integer number (3133531683).

Almost surely, 2^12302013221 is an apocalyptic number.

It is an amenable number.

12302013221 is a deficient number, since it is larger than the sum of its proper divisors (232113511).

12302013221 is an equidigital number, since it uses as much as digits as its factorization.

12302013221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232113510.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 12302013221 its reverse (12231020321), we get a palindrome (24533033542).

The spelling of 12302013221 in words is "twelve billion, three hundred two million, thirteen thousand, two hundred twenty-one".