44102220221 has 4 divisors (see below), whose sum is σ = 44116363200. Its totient is φ = 44088077244.

The previous prime is 44102220193. The next prime is 44102220257. The reversal of 44102220221 is 12202220144.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44102220221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 44102220193 and 44102220202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44102220821) 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, 7066811 + ... + 7073048.

It is an arithmetic number, because the mean of its divisors is an integer number (11029090800).

Almost surely, 2^44102220221 is an apocalyptic number.

It is an amenable number.

44102220221 is a deficient number, since it is larger than the sum of its proper divisors (14142979).

44102220221 is a wasteful number, since it uses less digits than its factorization.

44102220221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14142978.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 44102220221 its reverse (12202220144), we get a palindrome (56304440365).

The spelling of 44102220221 in words is "forty-four billion, one hundred two million, two hundred twenty thousand, two hundred twenty-one".