8212171280112 has 40 divisors (see below), whose sum is σ = 23571973120080. Its totient is φ = 2737390426560.

The previous prime is 8212171280107. The next prime is 8212171280167. The reversal of 8212171280112 is 2110821712128.

8212171280112 is a `hidden beast` number, since 82 + 121 + 71 + 280 + 112 = 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 7 ways as a sum of consecutive naturals, for example, 9504827439 + ... + 9504828302.

It is an arithmetic number, because the mean of its divisors is an integer number (589299328002).

Almost surely, 2^{8212171280112} is an apocalyptic number.

It is an amenable number.

8212171280112 is an abundant number, since it is smaller than the sum of its proper divisors (15359801839968).

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

8212171280112 is a wasteful number, since it uses less digits than its factorization.

8212171280112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19009655758 (or 19009655746 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 36.

The spelling of 8212171280112 in words is "eight trillion, two hundred twelve billion, one hundred seventy-one million, two hundred eighty thousand, one hundred twelve".