12203021320 has 64 divisors (see below), whose sum is σ = 33030748800. Its totient is φ = 3963686400.

The previous prime is 12203021317. The next prime is 12203021321. The reversal of 12203021320 is 2312030221.

It is a junction number, because it is equal to n+sod(n) for n = 12203021294 and 12203021303.

It is not an unprimeable number, because it can be changed into a prime (12203021321) 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, 1141581 + ... + 1152220.

It is an arithmetic number, because the mean of its divisors is an integer number (516105450).

Almost surely, 2^12203021320 is an apocalyptic number.

12203021320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12203021320 is an abundant number, since it is smaller than the sum of its proper divisors (20827727480).

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

12203021320 is a wasteful number, since it uses less digits than its factorization.

12203021320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2293838 (or 2293834 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 12203021320 its reverse (2312030221), we get a palindrome (14515051541).

The spelling of 12203021320 in words is "twelve billion, two hundred three million, twenty-one thousand, three hundred twenty".