12123103421412 has 144 divisors (see below), whose sum is σ = 31360833504000. Its totient is φ = 3947270745600.

The previous prime is 12123103421389. The next prime is 12123103421417. The reversal of 12123103421412 is 21412430132121.

12123103421412 is a `hidden beast` number, since 1 + 2 + 1 + 2 + 310 + 342 + 1 + 4 + 1 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (12123103421417) 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, 775077112 + ... + 775092752.

It is an arithmetic number, because the mean of its divisors is an integer number (217783566000).

Almost surely, 2^{12123103421412} is an apocalyptic number.

12123103421412 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 12123103421412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15680416752000).

12123103421412 is an abundant number, since it is smaller than the sum of its proper divisors (19237730082588).

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

12123103421412 is a wasteful number, since it uses less digits than its factorization.

12123103421412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17474 (or 17469 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

Adding to 12123103421412 its reverse (21412430132121), we get a palindrome (33535533553533).

The spelling of 12123103421412 in words is "twelve trillion, one hundred twenty-three billion, one hundred three million, four hundred twenty-one thousand, four hundred twelve".