12032441021 has 4 divisors (see below), whose sum is σ = 12032818044. Its totient is φ = 12032064000.

The previous prime is 12032441009. The next prime is 12032441023. The reversal of 12032441021 is 12014423021.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4148776921 + 7883664100 = 64411^2 + 88790^2 .

It is a cyclic number.

It is not a de Polignac number, because 12032441021 - 2¹⁸ = 12032178877 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12032440984 and 12032441002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12032441023) 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 in 3 ways as a sum of consecutive naturals, for example, 135710 + ... + 206111.

It is an arithmetic number, because the mean of its divisors is an integer number (3008204511).

Almost surely, 2^12032441021 is an apocalyptic number.

It is an amenable number.

12032441021 is a deficient number, since it is larger than the sum of its proper divisors (377023).

12032441021 is an equidigital number, since it uses as much as digits as its factorization.

12032441021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377022.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 12032441021 its reverse (12014423021), we get a palindrome (24046864042).

The spelling of 12032441021 in words is "twelve billion, thirty-two million, four hundred forty-one thousand, twenty-one".