12103112412 has 36 divisors (see below), whose sum is σ = 31024886256. Its totient is φ = 3977547840.

The previous prime is 12103112381. The next prime is 12103112429. The reversal of 12103112412 is 21421130121.

12103112412 is a `hidden beast` number, since 1 + 210 + 31 + 12 + 412 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

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 11 ways as a sum of consecutive naturals, for example, 2365033 + ... + 2370144.

It is an arithmetic number, because the mean of its divisors is an integer number (861802396).

Almost surely, 2^12103112412 is an apocalyptic number.

12103112412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12103112412 is an abundant number, since it is smaller than the sum of its proper divisors (18921773844).

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

12103112412 is a wasteful number, since it uses less digits than its factorization.

12103112412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4735258 (or 4735253 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 12103112412 its reverse (21421130121), we get a palindrome (33524242533).

The spelling of 12103112412 in words is "twelve billion, one hundred three million, one hundred twelve thousand, four hundred twelve".