320021121100 has 54 divisors (see below), whose sum is σ = 732919368804. Its totient is φ = 121271148000.

The previous prime is 320021121097. The next prime is 320021121137. The reversal of 320021121100 is 1121120023.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 4396326 + ... + 4468525.

Almost surely, 2^320021121100 is an apocalyptic number.

It is an amenable number.

320021121100 is an abundant number, since it is smaller than the sum of its proper divisors (412898247704).

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

320021121100 is a wasteful number, since it uses less digits than its factorization.

320021121100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8864903 (or 8864877 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 320021121100 its reverse (1121120023), we get a palindrome (321142241123).

The spelling of 320021121100 in words is "three hundred twenty billion, twenty-one million, one hundred twenty-one thousand, one hundred".