12323021 has 2 divisors, whose sum is σ = 12323022.
Its totient is φ = 12323020.
The previous prime is 12322993. The next prime is 12323041. The reversal of 12323021 is 12032321.
Adding to 12323021 its reverse (12032321), we get a palindrome (24355342).
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., 10797796 + 1525225 = 3286^2 + 1235^2
It is a cyclic number.
It is not a de Polignac number, because 12323021 - 26 = 12322957 is a prime.
It is a junction number, because it is equal to n+sod(n) for n = 12322987 and 12323005.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (12323041) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6161510 + 6161511.
It is an arithmetic number, because the mean of its divisors is an integer number (6161511).
Almost surely, 212323021 is an apocalyptic number.
It is an amenable number.
12323021 is a deficient number, since it is larger than the sum of its proper divisors (1).
12323021 is an equidigital number, since it uses as much as digits as its factorization.
12323021 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 72, while the sum is 14.
The square root of 12323021 is about 3510.4160722057.
The cubic root of 12323021 is about 230.9789465017.
The spelling of 12323021 in words is "twelve million, three hundred twenty-three thousand, twenty-one".