320011330121221 has 24 divisors (see below), whose sum is σ = 336619645668864. Its totient is φ = 303647201716320.

The previous prime is 320011330121209. The next prime is 320011330121243. The reversal of 320011330121221 is 122121033110023.

It is not a de Polignac number, because 320011330121221 - 2⁹ = 320011330120709 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 320011330121192 and 320011330121201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320011330121261) 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 23 ways as a sum of consecutive naturals, for example, 3002182636 + ... + 3002289226.

It is an arithmetic number, because the mean of its divisors is an integer number (14025818569536).

Almost surely, 2^{320011330121221} is an apocalyptic number.

It is an amenable number.

320011330121221 is a deficient number, since it is larger than the sum of its proper divisors (16608315547643).

320011330121221 is a wasteful number, since it uses less digits than its factorization.

320011330121221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114961 (or 114834 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 320011330121221 its reverse (122121033110023), we get a palindrome (442132363231244).

The spelling of 320011330121221 in words is "three hundred twenty trillion, eleven billion, three hundred thirty million, one hundred twenty-one thousand, two hundred twenty-one".