160117221 has 16 divisors (see below), whose sum is σ = 235303488. Its totient is φ = 96038400.

The previous prime is 160117211. The next prime is 160117247. The reversal of 160117221 is 122711061.

It is a happy number.

160117221 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 160117221 - 2⁶ = 160117157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (160117211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21810 + ... + 28211.

It is an arithmetic number, because the mean of its divisors is an integer number (14706468).

Almost surely, 2^160117221 is an apocalyptic number.

160117221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

160117221 is a deficient number, since it is larger than the sum of its proper divisors (75186267).

160117221 is a wasteful number, since it uses less digits than its factorization.

160117221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50132.

The product of its (nonzero) digits is 168, while the sum is 21.

The square root of 160117221 is about 12653.7433591803. The cubic root of 160117221 is about 543.0160687667.

Adding to 160117221 its reverse (122711061), we get a palindrome (282828282).

It can be divided in two parts, 16011 and 7221, that added together give a palindrome (23232).

The spelling of 160117221 in words is "one hundred sixty million, one hundred seventeen thousand, two hundred twenty-one".