12120020120 has 128 divisors (see below), whose sum is σ = 31148712000. Its totient is φ = 4204609536.

The previous prime is 12120020113. The next prime is 12120020123. The reversal of 12120020120 is 2102002121.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12120020123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9272507 + ... + 9273813.

Almost surely, 2^12120020120 is an apocalyptic number.

12120020120 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 12120020120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15574356000).

12120020120 is an abundant number, since it is smaller than the sum of its proper divisors (19028691880).

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

12120020120 is a wasteful number, since it uses less digits than its factorization.

12120020120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2397 (or 2393 counting only the distinct ones).

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

Adding to 12120020120 its reverse (2102002121), we get a palindrome (14222022241).

The spelling of 12120020120 in words is "twelve billion, one hundred twenty million, twenty thousand, one hundred twenty".