12321026 has 4 divisors (see below), whose sum is σ = 18481542. Its totient is φ = 6160512.

The previous prime is 12321017. The next prime is 12321041. The reversal of 12321026 is 62012321.

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

It can be written as a sum of positive squares in only one way, i.e., 7263025 + 5058001 = 2695^2 + 2249^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12320995 and 12321013.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3080255 + ... + 3080258.

Almost surely, 2^12321026 is an apocalyptic number.

12321026 is a deficient number, since it is larger than the sum of its proper divisors (6160516).

12321026 is an equidigital number, since it uses as much as digits as its factorization.

12321026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6160515.

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

The square root of 12321026 is about 3510.1319063534. The cubic root of 12321026 is about 230.9664812719.

Adding to 12321026 its reverse (62012321), we get a palindrome (74333347).

The spelling of 12321026 in words is "twelve million, three hundred twenty-one thousand, twenty-six".