320021123320 has 32 divisors (see below), whose sum is σ = 762403266000. Its totient is φ = 120478540288.

The previous prime is 320021123311. The next prime is 320021123327. The reversal of 320021123320 is 23321120023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320021123327) 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 7 ways as a sum of consecutive naturals, for example, 235308970 + ... + 235310329.

Almost surely, 2^320021123320 is an apocalyptic number.

It is an amenable number.

320021123320 is an abundant number, since it is smaller than the sum of its proper divisors (442382142680).

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

320021123320 is a wasteful number, since it uses less digits than its factorization.

320021123320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470619327 (or 470619323 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 320021123320 its reverse (23321120023), we get a palindrome (343342243343).

The spelling of 320021123320 in words is "three hundred twenty billion, twenty-one million, one hundred twenty-three thousand, three hundred twenty".