244050021721 has 16 divisors (see below), whose sum is σ = 273769489728. Its totient is φ = 215600875200.

The previous prime is 244050021713. The next prime is 244050021767. The reversal of 244050021721 is 127120050442.

244050021721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 244050021721 - 2³ = 244050021713 is a prime.

It is a super-3 number, since 3×244050021721³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 244050021721.

It is not an unprimeable number, because it can be changed into a prime (244050021521) 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 15 ways as a sum of consecutive naturals, for example, 39610 + ... + 699763.

It is an arithmetic number, because the mean of its divisors is an integer number (17110593108).

Almost surely, 2^244050021721 is an apocalyptic number.

It is an amenable number.

244050021721 is a deficient number, since it is larger than the sum of its proper divisors (29719468007).

244050021721 is a wasteful number, since it uses less digits than its factorization.

244050021721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 740232.

The product of its (nonzero) digits is 4480, while the sum is 28.

The spelling of 244050021721 in words is "two hundred forty-four billion, fifty million, twenty-one thousand, seven hundred twenty-one".