12331123100 has 72 divisors (see below), whose sum is σ = 27928868688. Its totient is φ = 4721267200.

The previous prime is 12331123067. The next prime is 12331123183. The reversal of 12331123100 is 132113321.

It is a super-2 number, since 2×12331123100² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 188927 + ... + 245673.

It is an arithmetic number, because the mean of its divisors is an integer number (387900954).

Almost surely, 2^12331123100 is an apocalyptic number.

12331123100 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 12331123100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13964434344).

12331123100 is an abundant number, since it is smaller than the sum of its proper divisors (15597745588).

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

12331123100 is a wasteful number, since it uses less digits than its factorization.

12331123100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56855 (or 56848 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 12331123100 its reverse (132113321), we get a palindrome (12463236421).

The spelling of 12331123100 in words is "twelve billion, three hundred thirty-one million, one hundred twenty-three thousand, one hundred".