8212171198 has 64 divisors (see below), whose sum is σ = 16285183488. Its totient is φ = 3006904320.

The previous prime is 8212171189. The next prime is 8212171199. The reversal of 8212171198 is 8911712128.

It is a self number, because there is not a number n which added to its sum of digits gives 8212171198.

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 in 31 ways as a sum of consecutive naturals, for example, 2163190 + ... + 2166982.

It is an arithmetic number, because the mean of its divisors is an integer number (254455992).

Almost surely, 2^8212171198 is an apocalyptic number.

8212171198 is a deficient number, since it is larger than the sum of its proper divisors (8073012290).

8212171198 is a wasteful number, since it uses less digits than its factorization.

8212171198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4657.

The product of its digits is 16128, while the sum is 40.

The square root of 8212171198 is about 90621.0306606585. The cubic root of 8212171198 is about 2017.5268885786.

The spelling of 8212171198 in words is "eight billion, two hundred twelve million, one hundred seventy-one thousand, one hundred ninety-eight".