12159221760 has 816 divisors, whose sum is σ = 52344514560. Its totient is φ = 2548039680.

The previous prime is 12159221759. The next prime is 12159221771. The reversal of 12159221760 is 6712295121.

12159221760 is a `hidden beast` number, since 1 + 2 + 1 + 592 + 2 + 1 + 7 + 60 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 392232945 + ... + 392232975.

Almost surely, 2^12159221760 is an apocalyptic number.

12159221760 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 12159221760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26172257280).

12159221760 is an abundant number, since it is smaller than the sum of its proper divisors (40185292800).

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

12159221760 is an equidigital number, since it uses as much as digits as its factorization.

12159221760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100 (or 67 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The spelling of 12159221760 in words is "twelve billion, one hundred fifty-nine million, two hundred twenty-one thousand, seven hundred sixty".