8912222197 has 4 divisors (see below), whose sum is σ = 8914759756. Its totient is φ = 8909684640.

The previous prime is 8912222191. The next prime is 8912222201. The reversal of 8912222197 is 7912222198.

It is a happy number.

8912222197 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7912222198 = 2 ⋅3956111099.

It can be written as a sum of positive squares in 2 ways, for example, as 6048795076 + 2863427121 = 77774^2 + 53511^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8912222197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8912222191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1263504 + ... + 1270537.

It is an arithmetic number, because the mean of its divisors is an integer number (2228689939).

Almost surely, 2^8912222197 is an apocalyptic number.

It is an amenable number.

8912222197 is a deficient number, since it is larger than the sum of its proper divisors (2537559).

8912222197 is a wasteful number, since it uses less digits than its factorization.

8912222197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2537558.

The product of its digits is 72576, while the sum is 43.

The square root of 8912222197 is about 94404.5666109431. The cubic root of 8912222197 is about 2073.2993039674.

Subtracting from 8912222197 its reverse (7912222198), we obtain a palindrome (999999999).

The spelling of 8912222197 in words is "eight billion, nine hundred twelve million, two hundred twenty-two thousand, one hundred ninety-seven".