12131240140140 has 192 divisors, whose sum is σ = 37127305152000. Its totient is φ = 2935207249920.

The previous prime is 12131240140139. The next prime is 12131240140183. The reversal of 12131240140140 is 4104104213121.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 12131240140140.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 843084066 + ... + 843098454.

It is an arithmetic number, because the mean of its divisors is an integer number (193371381000).

Almost surely, 2^{12131240140140} is an apocalyptic number.

12131240140140 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 12131240140140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18563652576000).

12131240140140 is an abundant number, since it is smaller than the sum of its proper divisors (24996065011860).

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

12131240140140 is a wasteful number, since it uses less digits than its factorization.

12131240140140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16800 (or 16798 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

Adding to 12131240140140 its reverse (4104104213121), we get a palindrome (16235344353261).

The spelling of 12131240140140 in words is "twelve trillion, one hundred thirty-one billion, two hundred forty million, one hundred forty thousand, one hundred forty".