160221115 has 4 divisors (see below), whose sum is σ = 192265344. Its totient is φ = 128176888.

The previous prime is 160221109. The next prime is 160221121. The reversal of 160221115 is 511122061.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 511122061 = 10267 ⋅49783.

It is an interprime number because it is at equal distance from previous prime (160221109) and next prime (160221121).

It is a cyclic number.

It is not a de Polignac number, because 160221115 - 2¹⁷ = 160090043 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 160221092 and 160221101.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16022107 + ... + 16022116.

It is an arithmetic number, because the mean of its divisors is an integer number (48066336).

Almost surely, 2^160221115 is an apocalyptic number.

160221115 is a deficient number, since it is larger than the sum of its proper divisors (32044229).

160221115 is an equidigital number, since it uses as much as digits as its factorization.

160221115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32044228.

The product of its (nonzero) digits is 120, while the sum is 19.

The square root of 160221115 is about 12657.8479608502. The cubic root of 160221115 is about 543.1334908932.

Adding to 160221115 its reverse (511122061), we get a palindrome (671343176).

The spelling of 160221115 in words is "one hundred sixty million, two hundred twenty-one thousand, one hundred fifteen".