160221361 has 4 divisors (see below), whose sum is σ = 165389824. Its totient is φ = 155052900.

The previous prime is 160221353. The next prime is 160221371. The reversal of 160221361 is 163122061.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 163122061 = 359 ⋅454379.

It is a cyclic number.

It is not a de Polignac number, because 160221361 - 2³ = 160221353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (160221301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2584185 + ... + 2584246.

It is an arithmetic number, because the mean of its divisors is an integer number (41347456).

Almost surely, 2^160221361 is an apocalyptic number.

It is an amenable number.

160221361 is a deficient number, since it is larger than the sum of its proper divisors (5168463).

160221361 is an equidigital number, since it uses as much as digits as its factorization.

160221361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5168462.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 160221361 is about 12657.8576781381. The cubic root of 160221361 is about 543.1337688649.

The spelling of 160221361 in words is "one hundred sixty million, two hundred twenty-one thousand, three hundred sixty-one".