12321013320220 has 48 divisors (see below), whose sum is σ = 28226753559648. Its totient is φ = 4480299887360.

The previous prime is 12321013320179. The next prime is 12321013320223. The reversal of 12321013320220 is 2202331012321.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 12321013320191 and 12321013320200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12321013320223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15279054 + ... + 16065226.

It is an arithmetic number, because the mean of its divisors is an integer number (588057365826).

Almost surely, 2^{12321013320220} is an apocalyptic number.

12321013320220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12321013320220 is an abundant number, since it is smaller than the sum of its proper divisors (15905740239428).

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

12321013320220 is a wasteful number, since it uses less digits than its factorization.

12321013320220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 857430 (or 857428 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 12321013320220 its reverse (2202331012321), we get a palindrome (14523344332541).

The spelling of 12321013320220 in words is "twelve trillion, three hundred twenty-one billion, thirteen million, three hundred twenty thousand, two hundred twenty".