12101220120 has 128 divisors (see below), whose sum is σ = 40162106880. Its totient is φ = 2892288000.

The previous prime is 12101220119. The next prime is 12101220149. The reversal of 12101220120 is 2102210121.

12101220120 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 12101220096 and 12101220105.

It is a congruent number.

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, 29160 + ... + 158280.

It is an arithmetic number, because the mean of its divisors is an integer number (313766460).

Almost surely, 2^12101220120 is an apocalyptic number.

12101220120 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 12101220120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20081053440).

12101220120 is an abundant number, since it is smaller than the sum of its proper divisors (28060886760).

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

12101220120 is a wasteful number, since it uses less digits than its factorization.

12101220120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129217 (or 129213 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 12101220120 its reverse (2102210121), we get a palindrome (14203430241).

Subtracting from 12101220120 its reverse (2102210121), we obtain a palindrome (9999009999).

It can be divided in two parts, 12101 and 220120, that added together give a triangular number (232221 = T₆₈₁).

The spelling of 12101220120 in words is "twelve billion, one hundred one million, two hundred twenty thousand, one hundred twenty".