12012221312300 has 108 divisors (see below), whose sum is σ = 28755073203360. Its totient is φ = 4352310019200.

The previous prime is 12012221312293. The next prime is 12012221312309. The reversal of 12012221312300 is 321312221021.

12012221312300 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 (20).

It is not an unprimeable number, because it can be changed into a prime (12012221312309) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1559741 + ... + 5143659.

Almost surely, 2^{12012221312300} is an apocalyptic number.

12012221312300 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 12012221312300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14377536601680).

12012221312300 is an abundant number, since it is smaller than the sum of its proper divisors (16742851891060).

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

12012221312300 is a wasteful number, since it uses less digits than its factorization.

12012221312300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3584232 (or 3584214 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 12012221312300 its reverse (321312221021), we get a palindrome (12333533533321).

The spelling of 12012221312300 in words is "twelve trillion, twelve billion, two hundred twenty-one million, three hundred twelve thousand, three hundred".