12320102021 has 2 divisors, whose sum is σ = 12320102022. Its totient is φ = 12320102020.

The previous prime is 12320101991. The next prime is 12320102027. The reversal of 12320102021 is 12020102321.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6318501121 + 6001600900 = 79489^2 + 77470^2 .

It is a cyclic number.

It is not a de Polignac number, because 12320102021 - 2¹⁰ = 12320100997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12320101987 and 12320102005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12320102027) 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, 6160051010 + 6160051011.

It is an arithmetic number, because the mean of its divisors is an integer number (6160051011).

Almost surely, 2^12320102021 is an apocalyptic number.

It is an amenable number.

12320102021 is a deficient number, since it is larger than the sum of its proper divisors (1).

12320102021 is an equidigital number, since it uses as much as digits as its factorization.

12320102021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 12320102021 its reverse (12020102321), we get a palindrome (24340204342).

The spelling of 12320102021 in words is "twelve billion, three hundred twenty million, one hundred two thousand, twenty-one".