220366161 has 12 divisors (see below), whose sum is σ = 335059920. Its totient is φ = 139178520.

The previous prime is 220366141. The next prime is 220366169. The reversal of 220366161 is 161663022.

It is not a de Polignac number, because 220366161 - 2⁵ = 220366129 is a prime.

It is a super-2 number, since 2×220366161² = 97122489827755842, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (220366169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 644175 + ... + 644516.

It is an arithmetic number, because the mean of its divisors is an integer number (27921660).

Almost surely, 2^220366161 is an apocalyptic number.

It is an amenable number.

220366161 is a deficient number, since it is larger than the sum of its proper divisors (114693759).

220366161 is a wasteful number, since it uses less digits than its factorization.

220366161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1288716 (or 1288713 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 220366161 is about 14844.7351273103. The cubic root of 220366161 is about 604.0158039006.

The spelling of 220366161 in words is "two hundred twenty million, three hundred sixty-six thousand, one hundred sixty-one".