12120232500 has 360 divisors, whose sum is σ = 40404716352. Its totient is φ = 3175200000.

The previous prime is 12120232499. The next prime is 12120232511. The reversal of 12120232500 is 523202121.

12120232500 is a `hidden beast` number, since 12 + 120 + 2 + 32 + 500 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 43132360 + ... + 43132640.

Almost surely, 2^12120232500 is an apocalyptic number.

12120232500 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 12120232500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20202358176).

12120232500 is an abundant number, since it is smaller than the sum of its proper divisors (28284483852).

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

12120232500 is an equidigital number, since it uses as much as digits as its factorization.

12120232500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391 (or 362 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

Adding to 12120232500 its reverse (523202121), we get a palindrome (12643434621).

The spelling of 12120232500 in words is "twelve billion, one hundred twenty million, two hundred thirty-two thousand, five hundred".