12021313313320 has 128 divisors (see below), whose sum is σ = 27582987801600. Its totient is φ = 4714278395904.

The previous prime is 12021313313311. The next prime is 12021313313329. The reversal of 12021313313320 is 2331331312021.

12021313313320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12021313313311) and next prime (12021313313329).

It is not an unprimeable number, because it can be changed into a prime (12021313313329) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 355548576 + ... + 355582384.

It is an arithmetic number, because the mean of its divisors is an integer number (215492092200).

Almost surely, 2^{12021313313320} is an apocalyptic number.

12021313313320 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 12021313313320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13791493900800).

12021313313320 is an abundant number, since it is smaller than the sum of its proper divisors (15561674488280).

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

12021313313320 is a wasteful number, since it uses less digits than its factorization.

12021313313320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34619 (or 34615 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 12021313313320 its reverse (2331331312021), we get a palindrome (14352644625341).

The spelling of 12021313313320 in words is "twelve trillion, twenty-one billion, three hundred thirteen million, three hundred thirteen thousand, three hundred twenty".