12312333100 has 72 divisors (see below), whose sum is σ = 27010927440. Its totient is φ = 4871086080.

The previous prime is 12312333073. The next prime is 12312333161. The reversal of 12312333100 is 133321321.

It is a super-2 number, since 2×12312333100² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7604091 + ... + 7605709.

It is an arithmetic number, because the mean of its divisors is an integer number (375151770).

Almost surely, 2^12312333100 is an apocalyptic number.

12312333100 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 12312333100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13505463720).

12312333100 is an abundant number, since it is smaller than the sum of its proper divisors (14698594340).

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

12312333100 is a wasteful number, since it uses less digits than its factorization.

12312333100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2419 (or 2412 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 12312333100 its reverse (133321321), we get a palindrome (12445654421).

The spelling of 12312333100 in words is "twelve billion, three hundred twelve million, three hundred thirty-three thousand, one hundred".