44013011021 has 16 divisors (see below), whose sum is σ = 51464933376. Its totient is φ = 36855117936.

The previous prime is 44013011011. The next prime is 44013011023. The reversal of 44013011021 is 12011031044.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-44013011021 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 (44013011023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57680 + ... + 302246.

It is an arithmetic number, because the mean of its divisors is an integer number (3216558336).

Almost surely, 2^44013011021 is an apocalyptic number.

It is an amenable number.

44013011021 is a deficient number, since it is larger than the sum of its proper divisors (7451922355).

44013011021 is a wasteful number, since it uses less digits than its factorization.

44013011021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245168.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 44013011021 its reverse (12011031044), we get a palindrome (56024042065).

The spelling of 44013011021 in words is "forty-four billion, thirteen million, eleven thousand, twenty-one".