12303321221 has 4 divisors (see below), whose sum is σ = 12304618944. Its totient is φ = 12302023500.

The previous prime is 12303321203. The next prime is 12303321227. The reversal of 12303321221 is 12212330321.

12303321221 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, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12212330321 = 17029 ⋅717149.

It is a cyclic number.

It is not a de Polignac number, because 12303321221 - 2⁶ = 12303321157 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12303321193 and 12303321202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12303321227) 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, 634535 + ... + 653636.

It is an arithmetic number, because the mean of its divisors is an integer number (3076154736).

Almost surely, 2^12303321221 is an apocalyptic number.

It is an amenable number.

12303321221 is a deficient number, since it is larger than the sum of its proper divisors (1297723).

12303321221 is an equidigital number, since it uses as much as digits as its factorization.

12303321221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1297722.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 12303321221 its reverse (12212330321), we get a palindrome (24515651542).

The spelling of 12303321221 in words is "twelve billion, three hundred three million, three hundred twenty-one thousand, two hundred twenty-one".