12135804120 has 192 divisors, whose sum is σ = 43126387200. Its totient is φ = 2935215360.

The previous prime is 12135804113. The next prime is 12135804169. The reversal of 12135804120 is 2140853121.

12135804120 is a `hidden beast` number, since 1 + 21 + 3 + 580 + 41 + 20 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1830171 + ... + 1836789.

It is an arithmetic number, because the mean of its divisors is an integer number (224616600).

Almost surely, 2^12135804120 is an apocalyptic number.

12135804120 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 12135804120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21563193600).

12135804120 is an abundant number, since it is smaller than the sum of its proper divisors (30990583080).

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

12135804120 is a wasteful number, since it uses less digits than its factorization.

12135804120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7110 (or 7103 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The spelling of 12135804120 in words is "twelve billion, one hundred thirty-five million, eight hundred four thousand, one hundred twenty".