222160321 has 4 divisors (see below), whose sum is σ = 228164692. Its totient is φ = 216155952.

The previous prime is 222160319. The next prime is 222160327. The reversal of 222160321 is 123061222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 199120321 + 23040000 = 14111^2 + 4800^2 .

It is a cyclic number.

It is not a de Polignac number, because 222160321 - 2¹ = 222160319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222160327) 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, 3002130 + ... + 3002203.

It is an arithmetic number, because the mean of its divisors is an integer number (57041173).

Almost surely, 2^222160321 is an apocalyptic number.

It is an amenable number.

222160321 is a deficient number, since it is larger than the sum of its proper divisors (6004371).

222160321 is an equidigital number, since it uses as much as digits as its factorization.

222160321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6004370.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 222160321 is about 14905.0434752804. The cubic root of 222160321 is about 605.6506180617.

Subtracting from 222160321 its reverse (123061222), we obtain a palindrome (99099099).

The spelling of 222160321 in words is "two hundred twenty-two million, one hundred sixty thousand, three hundred twenty-one".