12012100130320 has 80 divisors (see below), whose sum is σ = 28200520497600. Its totient is φ = 4758172531200.

The previous prime is 12012100130297. The next prime is 12012100130323. The reversal of 12012100130320 is 2303100121021.

It is a tau number, because it is divible by the number of its divisors (80).

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

It is a junction number, because it is equal to n+sod(n) for n = 12012100130294 and 12012100130303.

It is not an unprimeable number, because it can be changed into a prime (12012100130323) 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, 2423275 + ... + 5467765.

It is an arithmetic number, because the mean of its divisors is an integer number (352506506220).

Almost surely, 2^{12012100130320} is an apocalyptic number.

12012100130320 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 12012100130320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14100260248800).

12012100130320 is an abundant number, since it is smaller than the sum of its proper divisors (16188420367280).

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

12012100130320 is a wasteful number, since it uses less digits than its factorization.

12012100130320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3044984 (or 3044978 counting only the distinct ones).

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

Adding to 12012100130320 its reverse (2303100121021), we get a palindrome (14315200251341).

The spelling of 12012100130320 in words is "twelve trillion, twelve billion, one hundred million, one hundred thirty thousand, three hundred twenty".