12312120100 has 36 divisors (see below), whose sum is σ = 30534059584. Its totient is φ = 4221298080.

The previous prime is 12312120089. The next prime is 12312120113. The reversal of 12312120100 is 102121321.

12312120100 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8793672 + ... + 8795071.

Almost surely, 2^12312120100 is an apocalyptic number.

12312120100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12312120100 is an abundant number, since it is smaller than the sum of its proper divisors (18221939484).

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

12312120100 is a wasteful number, since it uses less digits than its factorization.

12312120100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17588764 (or 17588757 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 12312120100 its reverse (102121321), we get a palindrome (12414241421).

The spelling of 12312120100 in words is "twelve billion, three hundred twelve million, one hundred twenty thousand, one hundred".