44552222221 has 4 divisors (see below), whose sum is σ = 47979316252. Its totient is φ = 41125128192.

The previous prime is 44552222207. The next prime is 44552222233. The reversal of 44552222221 is 12222225544.

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 18530015625 + 26022206596 = 136125^2 + 161314^2 .

It is a cyclic number.

It is not a de Polignac number, because 44552222221 - 2⁹ = 44552221709 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 (44552222021) 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, 1713546996 + ... + 1713547021.

It is an arithmetic number, because the mean of its divisors is an integer number (11994829063).

Almost surely, 2^44552222221 is an apocalyptic number.

It is an amenable number.

44552222221 is a deficient number, since it is larger than the sum of its proper divisors (3427094031).

44552222221 is a wasteful number, since it uses less digits than its factorization.

44552222221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3427094030.

The product of its digits is 25600, while the sum is 31.

Adding to 44552222221 its reverse (12222225544), we get a palindrome (56774447765).

The spelling of 44552222221 in words is "forty-four billion, five hundred fifty-two million, two hundred twenty-two thousand, two hundred twenty-one".