221120323321 has 4 divisors (see below), whose sum is σ = 224234694144. Its totient is φ = 218005952500.

The previous prime is 221120323289. The next prime is 221120323381. The reversal of 221120323321 is 123323021122.

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 221120323321 - 2⁵ = 221120323289 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221120323292 and 221120323301.

It is not an unprimeable number, because it can be changed into a prime (221120323381) 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, 1557185305 + ... + 1557185446.

It is an arithmetic number, because the mean of its divisors is an integer number (56058673536).

Almost surely, 2^221120323321 is an apocalyptic number.

It is an amenable number.

221120323321 is a deficient number, since it is larger than the sum of its proper divisors (3114370823).

221120323321 is an equidigital number, since it uses as much as digits as its factorization.

221120323321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3114370822.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 221120323321 its reverse (123323021122), we get a palindrome (344443344443).

The spelling of 221120323321 in words is "two hundred twenty-one billion, one hundred twenty million, three hundred twenty-three thousand, three hundred twenty-one".