12171570012 has 108 divisors (see below), whose sum is σ = 37674010920. Its totient is φ = 3294551232.

The previous prime is 12171570011. The next prime is 12171570029. The reversal of 12171570012 is 21007517121.

12171570012 is a `hidden beast` number, since 1 + 21 + 71 + 570 + 0 + 1 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12171570011) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 148063 + ... + 215094.

Almost surely, 2^12171570012 is an apocalyptic number.

12171570012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12171570012 is an abundant number, since it is smaller than the sum of its proper divisors (25502440908).

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

12171570012 is a wasteful number, since it uses less digits than its factorization.

12171570012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363200 (or 363188 counting only the distinct ones).

The product of its (nonzero) digits is 980, while the sum is 27.

The spelling of 12171570012 in words is "twelve billion, one hundred seventy-one million, five hundred seventy thousand, twelve".