12420135115000 has 80 divisors (see below), whose sum is σ = 29105592385320. Its totient is φ = 4967163600000.

The previous prime is 12420135114983. The next prime is 12420135115001. The reversal of 12420135115000 is 51153102421.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12420135115001) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 28035214 + ... + 28474786.

Almost surely, 2^{12420135115000} is an apocalyptic number.

12420135115000 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 12420135115000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14552796192660).

12420135115000 is an abundant number, since it is smaller than the sum of its proper divisors (16685457270320).

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

12420135115000 is an equidigital number, since it uses as much as digits as its factorization.

12420135115000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445250 (or 445231 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 25.

Adding to 12420135115000 its reverse (51153102421), we get a palindrome (12471288217421).

The spelling of 12420135115000 in words is "twelve trillion, four hundred twenty billion, one hundred thirty-five million, one hundred fifteen thousand".