20441244021 has 24 divisors (see below), whose sum is σ = 30449113632. Its totient is φ = 12185527200.

The previous prime is 20441243971. The next prime is 20441244073. The reversal of 20441244021 is 12044214402.

It is not a de Polignac number, because 20441244021 - 2⁶ = 20441243957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20441243982 and 20441244000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20441245021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 439431 + ... + 483716.

It is an arithmetic number, because the mean of its divisors is an integer number (1268713068).

Almost surely, 2^20441244021 is an apocalyptic number.

It is an amenable number.

20441244021 is a deficient number, since it is larger than the sum of its proper divisors (10007869611).

20441244021 is a wasteful number, since it uses less digits than its factorization.

20441244021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 923233 (or 923222 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 24.

Adding to 20441244021 its reverse (12044214402), we get a palindrome (32485458423).

It can be divided in two parts, 20441 and 244021, that added together give a palindrome (264462).

The spelling of 20441244021 in words is "twenty billion, four hundred forty-one million, two hundred forty-four thousand, twenty-one".