12171102912 has 168 divisors, whose sum is σ = 35334041600. Its totient is φ = 4005324288.

The previous prime is 12171102907. The next prime is 12171102917. The reversal of 12171102912 is 21920117121.

It is an interprime number because it is at equal distance from previous prime (12171102907) and next prime (12171102917).

It is not an unprimeable number, because it can be changed into a prime (12171102917) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27724389 + ... + 27724827.

Almost surely, 2^12171102912 is an apocalyptic number.

12171102912 is a gapful number since it is divisible by the number (12) 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 12171102912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17667020800).

12171102912 is an abundant number, since it is smaller than the sum of its proper divisors (23162938688).

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

12171102912 is a wasteful number, since it uses less digits than its factorization.

12171102912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 963 (or 950 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 27.

The spelling of 12171102912 in words is "twelve billion, one hundred seventy-one million, one hundred two thousand, nine hundred twelve".