12103404323112 has 192 divisors, whose sum is σ = 33642152107200. Its totient is φ = 3929549644800.

The previous prime is 12103404323047. The next prime is 12103404323119. The reversal of 12103404323112 is 21132340430121.

12103404323112 is a `hidden beast` number, since 1 + 2 + 1 + 0 + 340 + 4 + 3 + 2 + 311 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (12103404323119) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 410506723 + ... + 410536205.

It is an arithmetic number, because the mean of its divisors is an integer number (175219542225).

Almost surely, 2^{12103404323112} is an apocalyptic number.

12103404323112 is a gapful number since it is divisible by the number (12) 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 12103404323112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16821076053600).

12103404323112 is an abundant number, since it is smaller than the sum of its proper divisors (21538747784088).

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

12103404323112 is a wasteful number, since it uses less digits than its factorization.

12103404323112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30328 (or 30321 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

Adding to 12103404323112 its reverse (21132340430121), we get a palindrome (33235744753233).

The spelling of 12103404323112 in words is "twelve trillion, one hundred three billion, four hundred four million, three hundred twenty-three thousand, one hundred twelve".