320132002221 has 56 divisors (see below), whose sum is σ = 494534714040. Its totient is φ = 207039545856.

The previous prime is 320132002219. The next prime is 320132002243. The reversal of 320132002221 is 122200231023.

320132002221 is a `hidden beast` number, since 320 + 1 + 320 + 0 + 2 + 2 + 21 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 18444356100 + 301687646121 = 135810^2 + 549261^2 .

It is not a de Polignac number, because 320132002221 - 2¹ = 320132002219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 320132002194 and 320132002203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320132002321) 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 55 ways as a sum of consecutive naturals, for example, 3392145 + ... + 3485241.

Almost surely, 2^320132002221 is an apocalyptic number.

It is an amenable number.

320132002221 is a deficient number, since it is larger than the sum of its proper divisors (174402711819).

320132002221 is an frugal number, since it uses more digits than its factorization.

320132002221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93257 (or 93242 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 320132002221 its reverse (122200231023), we get a palindrome (442332233244).

The spelling of 320132002221 in words is "three hundred twenty billion, one hundred thirty-two million, two thousand, two hundred twenty-one".