244421430021 has 24 divisors (see below), whose sum is σ = 355068544376. Its totient is φ = 162017781120.

The previous prime is 244421430007. The next prime is 244421430037. The reversal of 244421430021 is 120034124442.

244421430021 is a `hidden beast` number, since 2 + 444 + 214 + 3 + 0 + 0 + 2 + 1 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 731107521 + 243690322500 = 27039^2 + 493650^2 .

It is not a de Polignac number, because 244421430021 - 2¹¹ = 244421427973 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 (244421420021) 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 in 23 ways as a sum of consecutive naturals, for example, 12326511 + ... + 12346323.

Almost surely, 2^244421430021 is an apocalyptic number.

It is an amenable number.

244421430021 is a deficient number, since it is larger than the sum of its proper divisors (110647114355).

244421430021 is a wasteful number, since it uses less digits than its factorization.

244421430021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27573 (or 27570 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 244421430021 its reverse (120034124442), we get a palindrome (364455554463).

The spelling of 244421430021 in words is "two hundred forty-four billion, four hundred twenty-one million, four hundred thirty thousand, twenty-one".