220241305 has 4 divisors (see below), whose sum is σ = 264289572. Its totient is φ = 176193040.

The previous prime is 220241303. The next prime is 220241309. The reversal of 220241305 is 503142022.

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 132987024 + 87254281 = 11532^2 + 9341^2 .

It is not a de Polignac number, because 220241305 - 2¹ = 220241303 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220241303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22024126 + ... + 22024135.

It is an arithmetic number, because the mean of its divisors is an integer number (66072393).

Almost surely, 2^220241305 is an apocalyptic number.

It is an amenable number.

220241305 is a deficient number, since it is larger than the sum of its proper divisors (44048267).

220241305 is an equidigital number, since it uses as much as digits as its factorization.

220241305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44048266.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 220241305 is about 14840.5291347714. The cubic root of 220241305 is about 603.9017070654.

Adding to 220241305 its reverse (503142022), we get a palindrome (723383327).

The spelling of 220241305 in words is "two hundred twenty million, two hundred forty-one thousand, three hundred five".