12234442021 has 2 divisors, whose sum is σ = 12234442022. Its totient is φ = 12234442020.

The previous prime is 12234441977. The next prime is 12234442027. The reversal of 12234442021 is 12024443221.

12234442021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8242097796 + 3992344225 = 90786^2 + 63185^2 .

It is a cyclic number.

It is not a de Polignac number, because 12234442021 - 2³³ = 3644507429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12234442027) 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, 6117221010 + 6117221011.

It is an arithmetic number, because the mean of its divisors is an integer number (6117221011).

Almost surely, 2^12234442021 is an apocalyptic number.

It is an amenable number.

12234442021 is a deficient number, since it is larger than the sum of its proper divisors (1).

12234442021 is an equidigital number, since it uses as much as digits as its factorization.

12234442021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 12234442021 its reverse (12024443221), we get a palindrome (24258885242).

The spelling of 12234442021 in words is "twelve billion, two hundred thirty-four million, four hundred forty-two thousand, twenty-one".