12120330112 has 64 divisors (see below), whose sum is σ = 26365339440. Its totient is φ = 5504163840.

The previous prime is 12120330097. The next prime is 12120330113. The reversal of 12120330112 is 21103302121.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12120330113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1822858 + ... + 1829494.

Almost surely, 2^12120330112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12120330112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13182669720).

12120330112 is an abundant number, since it is smaller than the sum of its proper divisors (14245009328).

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

12120330112 is a wasteful number, since it uses less digits than its factorization.

12120330112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7959 (or 7947 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 12120330112 its reverse (21103302121), we get a palindrome (33223632233).

The spelling of 12120330112 in words is "twelve billion, one hundred twenty million, three hundred thirty thousand, one hundred twelve".