120321023100 has 144 divisors (see below), whose sum is σ = 356872158720. Its totient is φ = 31280883200.

The previous prime is 120321023041. The next prime is 120321023111. The reversal of 120321023100 is 1320123021.

It is a super-2 number, since 2×120321023100² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 120321023100.

It is a congruent number.

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 47 ways as a sum of consecutive naturals, for example, 24339229 + ... + 24344171.

It is an arithmetic number, because the mean of its divisors is an integer number (2478278880).

Almost surely, 2^120321023100 is an apocalyptic number.

120321023100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 120321023100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (178436079360).

120321023100 is an abundant number, since it is smaller than the sum of its proper divisors (236551135620).

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

120321023100 is a wasteful number, since it uses less digits than its factorization.

120321023100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6980 (or 6973 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 120321023100 its reverse (1320123021), we get a palindrome (121641146121).

The spelling of 120321023100 in words is "one hundred twenty billion, three hundred twenty-one million, twenty-three thousand, one hundred".