100120121320 has 64 divisors (see below), whose sum is σ = 226032768000. Its totient is φ = 39912714240.

The previous prime is 100120121293. The next prime is 100120121359. The reversal of 100120121320 is 23121021001.

It is a self number, because there is not a number n which added to its sum of digits gives 100120121320.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18514057 + ... + 18519463.

It is an arithmetic number, because the mean of its divisors is an integer number (3531762000).

Almost surely, 2^100120121320 is an apocalyptic number.

100120121320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100120121320 is an abundant number, since it is smaller than the sum of its proper divisors (125912646680).

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

100120121320 is a wasteful number, since it uses less digits than its factorization.

100120121320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6898 (or 6894 counting only the distinct ones).

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

Adding to 100120121320 its reverse (23121021001), we get a palindrome (123241142321).

The spelling of 100120121320 in words is "one hundred billion, one hundred twenty million, one hundred twenty-one thousand, three hundred twenty".