12123201240140 has 12 divisors (see below), whose sum is σ = 25458722604336. Its totient is φ = 4849280496048.

The previous prime is 12123201240133. The next prime is 12123201240181. The reversal of 12123201240140 is 4104210232121.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 303080030984 + ... + 303080031023.

It is an arithmetic number, because the mean of its divisors is an integer number (2121560217028).

Almost surely, 2^{12123201240140} is an apocalyptic number.

12123201240140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12123201240140 is an abundant number, since it is smaller than the sum of its proper divisors (13335521364196).

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

12123201240140 is a wasteful number, since it uses less digits than its factorization.

12123201240140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606160062016 (or 606160062014 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 12123201240140 its reverse (4104210232121), we get a palindrome (16227411472261).

The spelling of 12123201240140 in words is "twelve trillion, one hundred twenty-three billion, two hundred one million, two hundred forty thousand, one hundred forty".