12115214720 has 192 divisors, whose sum is σ = 35466562800. Its totient is φ = 3934973952.

The previous prime is 12115214719. The next prime is 12115214803. The reversal of 12115214720 is 2741251121.

It is a self number, because there is not a number n which added to its sum of digits gives 12115214720.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 585674 + ... + 606006.

Almost surely, 2^12115214720 is an apocalyptic number.

12115214720 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 12115214720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17733281400).

12115214720 is an abundant number, since it is smaller than the sum of its proper divisors (23351348080).

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

12115214720 is a wasteful number, since it uses less digits than its factorization.

12115214720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20385 (or 20366 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 26.

Adding to 12115214720 its reverse (2741251121), we get a palindrome (14856465841).

The spelling of 12115214720 in words is "twelve billion, one hundred fifteen million, two hundred fourteen thousand, seven hundred twenty".