12323021100 has 72 divisors (see below), whose sum is σ = 38397282000. Its totient is φ = 3033358080.

The previous prime is 12323021093. The next prime is 12323021107. The reversal of 12323021100 is 112032321.

It is an interprime number because it is at equal distance from previous prime (12323021093) and next prime (12323021107).

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 12323021100.

It is not an unprimeable number, because it can be changed into a prime (12323021107) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1575975 + ... + 1583774.

Almost surely, 2^12323021100 is an apocalyptic number.

12323021100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12323021100 is an abundant number, since it is smaller than the sum of its proper divisors (26074260900).

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

12323021100 is a wasteful number, since it uses less digits than its factorization.

12323021100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3159779 (or 3159772 counting only the distinct ones).

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

Adding to 12323021100 its reverse (112032321), we get a palindrome (12435053421).

The spelling of 12323021100 in words is "twelve billion, three hundred twenty-three million, twenty-one thousand, one hundred".