200424444021 has 6 divisors (see below), whose sum is σ = 289501974710. Its totient is φ = 133616296008.

The previous prime is 200424444019. The next prime is 200424444047. The reversal of 200424444021 is 120444424002.

200424444021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 123966663921 + 76457780100 = 352089^2 + 276510^2 .

It is not a de Polignac number, because 200424444021 - 2¹ = 200424444019 is a prime.

It is a super-2 number, since 2×200424444021² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200424442021) 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 5 ways as a sum of consecutive naturals, for example, 11134691326 + ... + 11134691343.

Almost surely, 2^200424444021 is an apocalyptic number.

It is an amenable number.

200424444021 is a deficient number, since it is larger than the sum of its proper divisors (89077530689).

200424444021 is a wasteful number, since it uses less digits than its factorization.

200424444021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22269382675 (or 22269382672 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 27.

Adding to 200424444021 its reverse (120444424002), we get a palindrome (320868868023).

The spelling of 200424444021 in words is "two hundred billion, four hundred twenty-four million, four hundred forty-four thousand, twenty-one".