12021303113220 has 96 divisors (see below), whose sum is σ = 33945582375936. Its totient is φ = 3178490889600.

The previous prime is 12021303113213. The next prime is 12021303113231. The reversal of 12021303113220 is 2231130312021.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8551017 + ... + 9857103.

It is an arithmetic number, because the mean of its divisors is an integer number (353599816416).

Almost surely, 2^{12021303113220} is an apocalyptic number.

12021303113220 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 12021303113220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16972791187968).

12021303113220 is an abundant number, since it is smaller than the sum of its proper divisors (21924279262716).

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

12021303113220 is a wasteful number, since it uses less digits than its factorization.

12021303113220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1307401 (or 1307399 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 12021303113220 its reverse (2231130312021), we get a palindrome (14252433425241).

The spelling of 12021303113220 in words is "twelve trillion, twenty-one billion, three hundred three million, one hundred thirteen thousand, two hundred twenty".