220020441 has 4 divisors (see below), whose sum is σ = 293360592. Its totient is φ = 146680292.

The previous prime is 220020433. The next prime is 220020457. The reversal of 220020441 is 144020022.

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 220020441 - 2³ = 220020433 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 220020441.

It is not an unprimeable number, because it can be changed into a prime (220020401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36670071 + ... + 36670076.

It is an arithmetic number, because the mean of its divisors is an integer number (73340148).

Almost surely, 2^220020441 is an apocalyptic number.

It is an amenable number.

220020441 is a deficient number, since it is larger than the sum of its proper divisors (73340151).

220020441 is an equidigital number, since it uses as much as digits as its factorization.

220020441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73340150.

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 220020441 is about 14833.0860241556. The cubic root of 220020441 is about 603.6997698353.

Adding to 220020441 its reverse (144020022), we get a palindrome (364040463).

The spelling of 220020441 in words is "two hundred twenty million, twenty thousand, four hundred forty-one".