8422111 has 16 divisors (see below), whose sum is σ = 9318400. Its totient is φ = 7581600.

The previous prime is 8422079. The next prime is 8422133. The reversal of 8422111 is 1112248.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 8422111 - 2⁵ = 8422079 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8422181) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46441 + ... + 46621.

It is an arithmetic number, because the mean of its divisors is an integer number (582400).

Almost surely, 2^8422111 is an apocalyptic number.

8422111 is a deficient number, since it is larger than the sum of its proper divisors (896289).

8422111 is a wasteful number, since it uses less digits than its factorization.

8422111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310.

The product of its digits is 128, while the sum is 19.

The square root of 8422111 is about 2902.0873522346. The cubic root of 8422111 is about 203.4574765208.

Adding to 8422111 its reverse (1112248), we get a palindrome (9534359).

The spelling of 8422111 in words is "eight million, four hundred twenty-two thousand, one hundred eleven".