120355321500 has 384 divisors, whose sum is σ = 405401068800. Its totient is φ = 30791577600.

The previous prime is 120355321453. The next prime is 120355321511. The reversal of 120355321500 is 5123553021.

It is a happy number.

120355321500 is a `hidden beast` number, since 120 + 3 + 5 + 5 + 32 + 1 + 500 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

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 127 ways as a sum of consecutive naturals, for example, 67728612 + ... + 67730388.

It is an arithmetic number, because the mean of its divisors is an integer number (1055731950).

Almost surely, 2^120355321500 is an apocalyptic number.

120355321500 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 120355321500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (202700534400).

120355321500 is an abundant number, since it is smaller than the sum of its proper divisors (285045747300).

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

120355321500 is a wasteful number, since it uses less digits than its factorization.

120355321500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2007 (or 1989 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

Adding to 120355321500 its reverse (5123553021), we get a palindrome (125478874521).

The spelling of 120355321500 in words is "one hundred twenty billion, three hundred fifty-five million, three hundred twenty-one thousand, five hundred".