2044330021 has 8 divisors (see below), whose sum is σ = 2056915224. Its totient is φ = 2031759360.

The previous prime is 2044330009. The next prime is 2044330039. The reversal of 2044330021 is 1200334402.

It can be written as a sum of positive squares in 4 ways, for example, as 756525025 + 1287804996 = 27505^2 + 35886^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2044330021 - 2²¹ = 2042232869 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 (2044330621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 435141 + ... + 439813.

It is an arithmetic number, because the mean of its divisors is an integer number (257114403).

Almost surely, 2^2044330021 is an apocalyptic number.

It is an amenable number.

2044330021 is a deficient number, since it is larger than the sum of its proper divisors (12585203).

2044330021 is a wasteful number, since it uses less digits than its factorization.

2044330021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7271.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 2044330021 is about 45214.2678918945. The cubic root of 2044330021 is about 1269.1618296135.

Adding to 2044330021 its reverse (1200334402), we get a palindrome (3244664423).

The spelling of 2044330021 in words is "two billion, forty-four million, three hundred thirty thousand, twenty-one".