12320341220 has 48 divisors (see below), whose sum is σ = 28236600000. Its totient is φ = 4478248320.

The previous prime is 12320341211. The next prime is 12320341223. The reversal of 12320341220 is 2214302321.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 12320341192 and 12320341201.

It is not an unprimeable number, because it can be changed into a prime (12320341223) 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, 583406 + ... + 604154.

It is an arithmetic number, because the mean of its divisors is an integer number (588262500).

Almost surely, 2^12320341220 is an apocalyptic number.

12320341220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12320341220 is an abundant number, since it is smaller than the sum of its proper divisors (15916258780).

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

12320341220 is a wasteful number, since it uses less digits than its factorization.

12320341220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23468 (or 23466 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 12320341220 its reverse (2214302321), we get a palindrome (14534643541).

The spelling of 12320341220 in words is "twelve billion, three hundred twenty million, three hundred forty-one thousand, two hundred twenty".