44533400221 has 4 divisors (see below), whose sum is σ = 44534249500. Its totient is φ = 44532550944.

The previous prime is 44533400203. The next prime is 44533400357. The reversal of 44533400221 is 12200433544.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18673222500 + 25860177721 = 136650^2 + 160811^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44533400221 is a prime.

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 44533400221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44533400621) 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 3 ways as a sum of consecutive naturals, for example, 340416 + ... + 452713.

It is an arithmetic number, because the mean of its divisors is an integer number (11133562375).

Almost surely, 2^44533400221 is an apocalyptic number.

It is an amenable number.

44533400221 is a deficient number, since it is larger than the sum of its proper divisors (849279).

44533400221 is an equidigital number, since it uses as much as digits as its factorization.

44533400221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 849278.

The product of its (nonzero) digits is 11520, while the sum is 28.

Adding to 44533400221 its reverse (12200433544), we get a palindrome (56733833765).

The spelling of 44533400221 in words is "forty-four billion, five hundred thirty-three million, four hundred thousand, two hundred twenty-one".