244021000000 has 98 divisors (see below), whose sum is σ = 605281197614. Its totient is φ = 97608000000.

The previous prime is 244020999997. The next prime is 244021000079. The reversal of 244021000000 is 120442.

It can be written as a sum of positive squares in 7 ways, for example, as 232655734336 + 11365265664 = 482344^2 + 106608^2 .

It is a congruent number.

It is an unprimeable number.

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 13 ways as a sum of consecutive naturals, for example, 877990 + ... + 1122010.

Almost surely, 2^244021000000 is an apocalyptic number.

244021000000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 244021000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (302640598807).

244021000000 is an abundant number, since it is smaller than the sum of its proper divisors (361260197614).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

244021000000 is an frugal number, since it uses more digits than its factorization.

244021000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244063 (or 244028 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

Adding to 244021000000 its reverse (120442), we get a palindrome (244021120442).

The spelling of 244021000000 in words is "two hundred forty-four billion, twenty-one million", and thus it is an aban number.