12100120312 has 64 divisors (see below), whose sum is σ = 27124632000. Its totient is φ = 4950629376.

The previous prime is 12100120309. The next prime is 12100120313. The reversal of 12100120312 is 21302100121.

It is a junction number, because it is equal to n+sod(n) for n = 12100120292 and 12100120301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12100120313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102678 + ... + 186394.

It is an arithmetic number, because the mean of its divisors is an integer number (423822375).

Almost surely, 2^12100120312 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 12100120312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13562316000).

12100120312 is an abundant number, since it is smaller than the sum of its proper divisors (15024511688).

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

12100120312 is a wasteful number, since it uses less digits than its factorization.

12100120312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83848 (or 83844 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 12100120312 its reverse (21302100121), we get a palindrome (33402220433).

The spelling of 12100120312 in words is "twelve billion, one hundred million, one hundred twenty thousand, three hundred twelve".