160821223 has 4 divisors (see below), whose sum is σ = 161845720. Its totient is φ = 159796728.

The previous prime is 160821217. The next prime is 160821281. The reversal of 160821223 is 322128061.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 322128061 = 17099 ⋅18839.

It is a cyclic number.

It is not a de Polignac number, because 160821223 - 2⁹ = 160820711 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (160821293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 512013 + ... + 512326.

It is an arithmetic number, because the mean of its divisors is an integer number (40461430).

Almost surely, 2^160821223 is an apocalyptic number.

160821223 is a deficient number, since it is larger than the sum of its proper divisors (1024497).

160821223 is a wasteful number, since it uses less digits than its factorization.

160821223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1024496.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 160821223 is about 12681.5307829930. The cubic root of 160821223 is about 543.8107479934.

Adding to 160821223 its reverse (322128061), we get a palindrome (482949284).

The spelling of 160821223 in words is "one hundred sixty million, eight hundred twenty-one thousand, two hundred twenty-three".