12020102120 has 128 divisors (see below), whose sum is σ = 30327847200. Its totient is φ = 4257017856.

The previous prime is 12020102057. The next prime is 12020102147. The reversal of 12020102120 is 2120102021.

It is a happy number.

12020102120 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 16 ways, for example, as 1339706404 + 10680395716 = 36602^2 + 103346^2 .

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 31 ways as a sum of consecutive naturals, for example, 2365022 + ... + 2370098.

Almost surely, 2^12020102120 is an apocalyptic number.

12020102120 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 12020102120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15163923600).

12020102120 is an abundant number, since it is smaller than the sum of its proper divisors (18307745080).

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

12020102120 is a wasteful number, since it uses less digits than its factorization.

12020102120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5287 (or 5283 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 12020102120 its reverse (2120102021), we get a palindrome (14140204141).

Subtracting from 12020102120 its reverse (2120102021), we obtain a palindrome (9900000099).

The spelling of 12020102120 in words is "twelve billion, twenty million, one hundred two thousand, one hundred twenty".