322001221320 has 80 divisors (see below), whose sum is σ = 1082281893660. Its totient is φ = 85866991488.

The previous prime is 322001221313. The next prime is 322001221387. The reversal of 322001221320 is 23122100223.

322001221320 is a `hidden beast` number, since 3 + 220 + 0 + 122 + 1 + 320 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 307339401924 + 14661819396 = 554382^2 + 121086^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 322001221293 and 322001221302.

It is an unprimeable number.

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 19 ways as a sum of consecutive naturals, for example, 49688307 + ... + 49694786.

Almost surely, 2^322001221320 is an apocalyptic number.

322001221320 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

322001221320 is an abundant number, since it is smaller than the sum of its proper divisors (760280672340).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

322001221320 is a wasteful number, since it uses less digits than its factorization.

322001221320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99383116 (or 99383103 counting only the distinct ones).

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

Adding to 322001221320 its reverse (23122100223), we get a palindrome (345123321543).

The spelling of 322001221320 in words is "three hundred twenty-two billion, one million, two hundred twenty-one thousand, three hundred twenty".