12231320100 has 72 divisors (see below), whose sum is σ = 35502623520. Its totient is φ = 3251239680.

The previous prime is 12231320083. The next prime is 12231320113. The reversal of 12231320100 is 102313221.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 12231320100.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28771 + ... + 159029.

Almost surely, 2^12231320100 is an apocalyptic number.

12231320100 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 12231320100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17751311760).

12231320100 is an abundant number, since it is smaller than the sum of its proper divisors (23271303420).

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

12231320100 is a wasteful number, since it uses less digits than its factorization.

12231320100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130589 (or 130582 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 12231320100 its reverse (102313221), we get a palindrome (12333633321).

The spelling of 12231320100 in words is "twelve billion, two hundred thirty-one million, three hundred twenty thousand, one hundred".