12320302021 has 2 divisors, whose sum is σ = 12320302022. Its totient is φ = 12320302020.

The previous prime is 12320302019. The next prime is 12320302063. The reversal of 12320302021 is 12020302321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8424669796 + 3895632225 = 91786^2 + 62415^2 .

It is a cyclic number.

It is not a de Polignac number, because 12320302021 - 2¹ = 12320302019 is a prime.

Together with 12320302019, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 12320301986 and 12320302004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12320302121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6160151010 + 6160151011.

It is an arithmetic number, because the mean of its divisors is an integer number (6160151011).

Almost surely, 2^12320302021 is an apocalyptic number.

It is an amenable number.

12320302021 is a deficient number, since it is larger than the sum of its proper divisors (1).

12320302021 is an equidigital number, since it uses as much as digits as its factorization.

12320302021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 12320302021 its reverse (12020302321), we get a palindrome (24340604342).

The spelling of 12320302021 in words is "twelve billion, three hundred twenty million, three hundred two thousand, twenty-one".