221332231321 has 8 divisors (see below), whose sum is σ = 221514831360. Its totient is φ = 221149696128.

The previous prime is 221332231271. The next prime is 221332231343. The reversal of 221332231321 is 123132233122.

221332231321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 221332231321 - 2⁷ = 221332231193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221332231381) 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 7 ways as a sum of consecutive naturals, for example, 8619820 + ... + 8645458.

It is an arithmetic number, because the mean of its divisors is an integer number (27689353920).

Almost surely, 2^221332231321 is an apocalyptic number.

It is an amenable number.

221332231321 is a deficient number, since it is larger than the sum of its proper divisors (182600039).

221332231321 is a wasteful number, since it uses less digits than its factorization.

221332231321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32423.

The product of its digits is 2592, while the sum is 25.

Adding to 221332231321 its reverse (123132233122), we get a palindrome (344464464443).

The spelling of 221332231321 in words is "two hundred twenty-one billion, three hundred thirty-two million, two hundred thirty-one thousand, three hundred twenty-one".