12255213320 has 128 divisors (see below), whose sum is σ = 32654534400. Its totient is φ = 4052345856.

The previous prime is 12255213239. The next prime is 12255213331. The reversal of 12255213320 is 2331255221.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 12255213320.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 868562 + ... + 882558.

It is an arithmetic number, because the mean of its divisors is an integer number (255113550).

Almost surely, 2^12255213320 is an apocalyptic number.

12255213320 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 12255213320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16327267200).

12255213320 is an abundant number, since it is smaller than the sum of its proper divisors (20399321080).

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

12255213320 is a wasteful number, since it uses less digits than its factorization.

12255213320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14127 (or 14123 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

Adding to 12255213320 its reverse (2331255221), we get a palindrome (14586468541).

The spelling of 12255213320 in words is "twelve billion, two hundred fifty-five million, two hundred thirteen thousand, three hundred twenty".