160033221 has 6 divisors (see below), whose sum is σ = 231159110. Its totient is φ = 106688808.

The previous prime is 160033207. The next prime is 160033243. The reversal of 160033221 is 122330061.

160033221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 99800100 + 60233121 = 9990^2 + 7761^2 .

It is not a de Polignac number, because 160033221 - 2¹⁸ = 159771077 is a prime.

It is a super-2 number, since 2×160033221² = 51221263647269682, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 160033194 and 160033203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (160033201) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8890726 + ... + 8890743.

Almost surely, 2^160033221 is an apocalyptic number.

It is an amenable number.

160033221 is a deficient number, since it is larger than the sum of its proper divisors (71125889).

160033221 is a wasteful number, since it uses less digits than its factorization.

160033221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17781475 (or 17781472 counting only the distinct ones).

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

The square root of 160033221 is about 12650.4237478434. The cubic root of 160033221 is about 542.9210939137.

Adding to 160033221 its reverse (122330061), we get a palindrome (282363282).

The spelling of 160033221 in words is "one hundred sixty million, thirty-three thousand, two hundred twenty-one".