8212171192 has 8 divisors (see below), whose sum is σ = 15397821000. Its totient is φ = 4106085592.

The previous prime is 8212171189. The next prime is 8212171199. The reversal of 8212171192 is 2911712128.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8212171199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 513260692 + ... + 513260707.

It is an arithmetic number, because the mean of its divisors is an integer number (1924727625).

Almost surely, 2^8212171192 is an apocalyptic number.

It is an amenable number.

8212171192 is a deficient number, since it is larger than the sum of its proper divisors (7185649808).

8212171192 is a wasteful number, since it uses less digits than its factorization.

8212171192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1026521405 (or 1026521401 counting only the distinct ones).

The product of its digits is 4032, while the sum is 34.

The square root of 8212171192 is about 90621.0306275536. The cubic root of 8212171192 is about 2017.5268880873.

The spelling of 8212171192 in words is "eight billion, two hundred twelve million, one hundred seventy-one thousand, one hundred ninety-two".