220241165 has 4 divisors (see below), whose sum is σ = 264289404. Its totient is φ = 176192928.

The previous prime is 220241117. The next prime is 220241173. The reversal of 220241165 is 561142022.

It is a happy number.

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 132388036 + 87853129 = 11506^2 + 9373^2 .

It is a cyclic number.

It is not a de Polignac number, because 220241165 - 2⁶ = 220241101 is a prime.

It is a Duffinian number.

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 220241165.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22024112 + ... + 22024121.

It is an arithmetic number, because the mean of its divisors is an integer number (66072351).

Almost surely, 2^220241165 is an apocalyptic number.

It is an amenable number.

220241165 is a deficient number, since it is larger than the sum of its proper divisors (44048239).

220241165 is an equidigital number, since it uses as much as digits as its factorization.

220241165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44048238.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 220241165 is about 14840.5244179577. The cubic root of 220241165 is about 603.9015791054.

Adding to 220241165 its reverse (561142022), we get a palindrome (781383187).

The spelling of 220241165 in words is "two hundred twenty million, two hundred forty-one thousand, one hundred sixty-five".