220330161 has 12 divisors (see below), whose sum is σ = 318398080. Its totient is φ = 146820600.

The previous prime is 220330157. The next prime is 220330163. The reversal of 220330161 is 161033022.

220330161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 220330161 - 2² = 220330157 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220330163) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23736 + ... + 31686.

Almost surely, 2^220330161 is an apocalyptic number.

It is an amenable number.

220330161 is a deficient number, since it is larger than the sum of its proper divisors (98067919).

220330161 is a wasteful number, since it uses less digits than its factorization.

220330161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11036 (or 11033 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 220330161 is about 14843.5225266781. The cubic root of 220330161 is about 603.9829105365.

Adding to 220330161 its reverse (161033022), we get a palindrome (381363183).

The spelling of 220330161 in words is "two hundred twenty million, three hundred thirty thousand, one hundred sixty-one".