12122120120 has 128 divisors (see below), whose sum is σ = 30531997440. Its totient is φ = 4294333440.

The previous prime is 12122120111. The next prime is 12122120159. The reversal of 12122120120 is 2102122121.

It is a junction number, because it is equal to n+sod(n) for n = 12122120095 and 12122120104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2663687 + ... + 2668233.

It is an arithmetic number, because the mean of its divisors is an integer number (238531230).

Almost surely, 2^12122120120 is an apocalyptic number.

12122120120 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 12122120120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15265998720).

12122120120 is an abundant number, since it is smaller than the sum of its proper divisors (18409877320).

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

12122120120 is a wasteful number, since it uses less digits than its factorization.

12122120120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4725 (or 4721 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 12122120120 its reverse (2102122121), we get a palindrome (14224242241).

The spelling of 12122120120 in words is "twelve billion, one hundred twenty-two million, one hundred twenty thousand, one hundred twenty".