120031225520 has 80 divisors (see below), whose sum is σ = 282045186048. Its totient is φ = 47503169280.

The previous prime is 120031225519. The next prime is 120031225529. The reversal of 120031225520 is 25522130021.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (120031225529) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3712625 + ... + 3744815.

Almost surely, 2^120031225520 is an apocalyptic number.

120031225520 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 120031225520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141022593024).

120031225520 is an abundant number, since it is smaller than the sum of its proper divisors (162013960528).

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

120031225520 is a wasteful number, since it uses less digits than its factorization.

120031225520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32698 (or 32692 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

Adding to 120031225520 its reverse (25522130021), we get a palindrome (145553355541).

The spelling of 120031225520 in words is "one hundred twenty billion, thirty-one million, two hundred twenty-five thousand, five hundred twenty".