220206161 has 8 divisors (see below), whose sum is σ = 251777280. Its totient is φ = 188663328.

The previous prime is 220206097. The next prime is 220206167. The reversal of 220206161 is 161602022.

It is a happy number.

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

It is not a de Polignac number, because 220206161 - 2⁶ = 220206097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220206167) 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, 13685 + ... + 25053.

It is an arithmetic number, because the mean of its divisors is an integer number (31472160).

Almost surely, 2^220206161 is an apocalyptic number.

It is an amenable number.

220206161 is a deficient number, since it is larger than the sum of its proper divisors (31571119).

220206161 is a wasteful number, since it uses less digits than its factorization.

220206161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14143.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 220206161 is about 14839.3450327162. The cubic root of 220206161 is about 603.8695837381.

Adding to 220206161 its reverse (161602022), we get a palindrome (381808183).

The spelling of 220206161 in words is "two hundred twenty million, two hundred six thousand, one hundred sixty-one".