8112222 has 24 divisors (see below), whose sum is σ = 17650776. Its totient is φ = 2692656.

The previous prime is 8112211. The next prime is 8112227. The reversal of 8112222 is 2222118.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 8112195 and 8112204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8112227) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4173 + ... + 5799.

It is an arithmetic number, because the mean of its divisors is an integer number (735449).

Almost surely, 2^8112222 is an apocalyptic number.

8112222 is an abundant number, since it is smaller than the sum of its proper divisors (9538554).

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

8112222 is a wasteful number, since it uses less digits than its factorization.

8112222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1912 (or 1909 counting only the distinct ones).

The product of its digits is 128, while the sum is 18.

The square root of 8112222 is about 2848.1962713268. The cubic root of 8112222 is about 200.9308442569.

The spelling of 8112222 in words is "eight million, one hundred twelve thousand, two hundred twenty-two".