120100021120 has 128 divisors (see below), whose sum is σ = 291076869600. Its totient is φ = 47380684800.

The previous prime is 120100021031. The next prime is 120100021123. The reversal of 120100021120 is 21120001021.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 120100021097 and 120100021106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120100021123) 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, 17384707 + ... + 17391613.

Almost surely, 2^120100021120 is an apocalyptic number.

120100021120 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 120100021120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (145538434800).

120100021120 is an abundant number, since it is smaller than the sum of its proper divisors (170976848480).

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

120100021120 is a wasteful number, since it uses less digits than its factorization.

120100021120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7296 (or 7284 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 120100021120 its reverse (21120001021), we get a palindrome (141220022141).

The spelling of 120100021120 in words is "one hundred twenty billion, one hundred million, twenty-one thousand, one hundred twenty".