220444001 has 8 divisors (see below), whose sum is σ = 224726400. Its totient is φ = 216179920.

The previous prime is 220443991. The next prime is 220444009. The reversal of 220444001 is 100444022.

220444001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 220444001 - 2²⁶ = 153335137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220444009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21095 + ... + 29763.

It is an arithmetic number, because the mean of its divisors is an integer number (28090800).

Almost surely, 2^220444001 is an apocalyptic number.

It is an amenable number.

220444001 is a deficient number, since it is larger than the sum of its proper divisors (4282399).

220444001 is an equidigital number, since it uses as much as digits as its factorization.

220444001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9159.

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 220444001 is about 14847.3567007734. The cubic root of 220444001 is about 604.0869144183.

Adding to 220444001 its reverse (100444022), we get a palindrome (320888023).

The spelling of 220444001 in words is "two hundred twenty million, four hundred forty-four thousand, one".