221321231111324 has 24 divisors (see below), whose sum is σ = 389256496129200. Its totient is φ = 110106476444160.

The previous prime is 221321231111317. The next prime is 221321231111327. The reversal of 221321231111324 is 423111132123122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221321231111327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172746869 + ... + 174023340.

It is an arithmetic number, because the mean of its divisors is an integer number (16219020672050).

Almost surely, 2^{221321231111324} is an apocalyptic number.

It is an amenable number.

221321231111324 is a deficient number, since it is larger than the sum of its proper divisors (167935265017876).

221321231111324 is a wasteful number, since it uses less digits than its factorization.

221321231111324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346771013 (or 346771011 counting only the distinct ones).

The product of its digits is 3456, while the sum is 29.

Adding to 221321231111324 its reverse (423111132123122), we get a palindrome (644432363234446).

The spelling of 221321231111324 in words is "two hundred twenty-one trillion, three hundred twenty-one billion, two hundred thirty-one million, one hundred eleven thousand, three hundred twenty-four".