12433021 has 2 divisors, whose sum is σ = 12433022. Its totient is φ = 12433020.

The previous prime is 12433009. The next prime is 12433037. The reversal of 12433021 is 12033421.

It is a happy number.

It is an a-pointer prime, because the next prime (12433037) can be obtained adding 12433021 to its sum of digits (16).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12425625 + 7396 = 3525^2 + 86^2 .

It is a cyclic number.

It is not a de Polignac number, because 12433021 - 2⁹ = 12432509 is a prime.

It is a super-2 number, since 2×12433021² = 309160022372882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12432986 and 12433004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12433121) 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 as a sum of consecutive naturals, namely, 6216510 + 6216511.

It is an arithmetic number, because the mean of its divisors is an integer number (6216511).

Almost surely, 2^12433021 is an apocalyptic number.

It is an amenable number.

12433021 is a deficient number, since it is larger than the sum of its proper divisors (1).

12433021 is an equidigital number, since it uses as much as digits as its factorization.

12433021 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.

The square root of 12433021 is about 3526.0489219522. The cubic root of 12433021 is about 231.6641804563.

Adding to 12433021 its reverse (12033421), we get a palindrome (24466442).

The spelling of 12433021 in words is "twelve million, four hundred thirty-three thousand, twenty-one".