44440232221 has 16 divisors (see below), whose sum is σ = 55616698368. Its totient is φ = 34497068400.

The previous prime is 44440232201. The next prime is 44440232237. The reversal of 44440232221 is 12223204444.

It is a cyclic number.

It is not a de Polignac number, because 44440232221 - 2²¹ = 44438135069 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 44440232221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44440232201) 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, 1076985 + ... + 1117486.

It is an arithmetic number, because the mean of its divisors is an integer number (3476043648).

Almost surely, 2^44440232221 is an apocalyptic number.

It is an amenable number.

44440232221 is a deficient number, since it is larger than the sum of its proper divisors (11176466147).

44440232221 is a wasteful number, since it uses less digits than its factorization.

44440232221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2194752.

The product of its (nonzero) digits is 12288, while the sum is 28.

Adding to 44440232221 its reverse (12223204444), we get a palindrome (56663436665).

The spelling of 44440232221 in words is "forty-four billion, four hundred forty million, two hundred thirty-two thousand, two hundred twenty-one".