441221433021 has 6 divisors (see below), whose sum is σ = 637319847710. Its totient is φ = 294147622008.

The previous prime is 441221433013. The next prime is 441221433071. The reversal of 441221433021 is 120334122144.

441221433021 is a `hidden beast` number, since 4 + 4 + 1 + 221 + 433 + 0 + 2 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 441221420025 + 12996 = 664245^2 + 114^2 .

It is not a de Polignac number, because 441221433021 - 2³ = 441221433013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (441221433071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24512301826 + ... + 24512301843.

Almost surely, 2^441221433021 is an apocalyptic number.

It is an amenable number.

441221433021 is a deficient number, since it is larger than the sum of its proper divisors (196098414689).

441221433021 is a wasteful number, since it uses less digits than its factorization.

441221433021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49024603675 (or 49024603672 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 441221433021 its reverse (120334122144), we get a palindrome (561555555165).

The spelling of 441221433021 in words is "four hundred forty-one billion, two hundred twenty-one million, four hundred thirty-three thousand, twenty-one".