12123440512000 has 176 divisors, whose sum is σ = 30268650016800. Its totient is φ = 4845637632000.

The previous prime is 12123440511997. The next prime is 12123440512013. The reversal of 12123440512000 is 21504432121.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 169052151 + ... + 169123849.

Almost surely, 2^{12123440512000} is an apocalyptic number.

12123440512000 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 12123440512000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15134325008400).

12123440512000 is an abundant number, since it is smaller than the sum of its proper divisors (18145209504800).

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

12123440512000 is an equidigital number, since it uses as much as digits as its factorization.

12123440512000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73055 (or 73027 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 12123440512000 its reverse (21504432121), we get a palindrome (12144944944121).

The spelling of 12123440512000 in words is "twelve trillion, one hundred twenty-three billion, four hundred forty million, five hundred twelve thousand".