44351442221 has 4 divisors (see below), whose sum is σ = 44361170844. Its totient is φ = 44341713600.

The previous prime is 44351442169. The next prime is 44351442241. The reversal of 44351442221 is 12224415344.

44351442221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 10122372100 + 34229070121 = 100610^2 + 185011^2 .

It is a cyclic number.

It is not a de Polignac number, because 44351442221 - 2¹⁴ = 44351425837 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 (44351442241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4857470 + ... + 4866591.

It is an arithmetic number, because the mean of its divisors is an integer number (11090292711).

Almost surely, 2^44351442221 is an apocalyptic number.

It is an amenable number.

44351442221 is a deficient number, since it is larger than the sum of its proper divisors (9728623).

44351442221 is an equidigital number, since it uses as much as digits as its factorization.

44351442221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9728622.

The product of its digits is 30720, while the sum is 32.

Adding to 44351442221 its reverse (12224415344), we get a palindrome (56575857565).

The spelling of 44351442221 in words is "forty-four billion, three hundred fifty-one million, four hundred forty-two thousand, two hundred twenty-one".