80221321 has 4 divisors (see below), whose sum is σ = 80413200. Its totient is φ = 80029444.

The previous prime is 80221319. The next prime is 80221331. The reversal of 80221321 is 12312208.

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.

It is a cyclic number.

It is not a de Polignac number, because 80221321 - 2¹ = 80221319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80221331) 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, 95311 + ... + 96148.

It is an arithmetic number, because the mean of its divisors is an integer number (20103300).

Almost surely, 2^80221321 is an apocalyptic number.

It is an amenable number.

80221321 is a deficient number, since it is larger than the sum of its proper divisors (191879).

80221321 is a wasteful number, since it uses less digits than its factorization.

80221321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191878.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 80221321 is about 8956.6355848611. The cubic root of 80221321 is about 431.2839235094.

Adding to 80221321 its reverse (12312208), we get a palindrome (92533529).

The spelling of 80221321 in words is "eighty million, two hundred twenty-one thousand, three hundred twenty-one".