441002221 has 4 divisors (see below), whose sum is σ = 481093344. Its totient is φ = 400911100.

The previous prime is 441002213. The next prime is 441002227. The reversal of 441002221 is 122200144.

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 not a de Polignac number, because 441002221 - 2³ = 441002213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 441002195 and 441002204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (441002227) 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, 20045545 + ... + 20045566.

It is an arithmetic number, because the mean of its divisors is an integer number (120273336).

Almost surely, 2^441002221 is an apocalyptic number.

It is an amenable number.

441002221 is a deficient number, since it is larger than the sum of its proper divisors (40091123).

441002221 is a wasteful number, since it uses less digits than its factorization.

441002221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40091122.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 441002221 is about 21000.0528808858. The cubic root of 441002221 is about 761.1675389157.

Adding to 441002221 its reverse (122200144), we get a palindrome (563202365).

The spelling of 441002221 in words is "four hundred forty-one million, two thousand, two hundred twenty-one".