221332011321 has 16 divisors (see below), whose sum is σ = 308419163136. Its totient is φ = 140919724176.

The previous prime is 221332011293. The next prime is 221332011347. The reversal of 221332011321 is 123110233122.

221332011321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 221332011321 - 2²² = 221327817017 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221332011371) 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 15 ways as a sum of consecutive naturals, for example, 2449965 + ... + 2538698.

It is an arithmetic number, because the mean of its divisors is an integer number (19276197696).

Almost surely, 2^221332011321 is an apocalyptic number.

It is an amenable number.

221332011321 is a deficient number, since it is larger than the sum of its proper divisors (87087151815).

221332011321 is a wasteful number, since it uses less digits than its factorization.

221332011321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4989332.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 221332011321 its reverse (123110233122), we get a palindrome (344442244443).

The spelling of 221332011321 in words is "two hundred twenty-one billion, three hundred thirty-two million, eleven thousand, three hundred twenty-one".