22111105 has 4 divisors (see below), whose sum is σ = 26533332. Its totient is φ = 17688880.

The previous prime is 22111099. The next prime is 22111109. The reversal of 22111105 is 50111122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11716929 + 10394176 = 3423^2 + 3224^2 .

It is not a de Polignac number, because 22111105 - 2¹¹ = 22109057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22111109) 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, 2211106 + ... + 2211115.

It is an arithmetic number, because the mean of its divisors is an integer number (6633333).

Almost surely, 2^22111105 is an apocalyptic number.

It is an amenable number.

22111105 is a deficient number, since it is larger than the sum of its proper divisors (4422227).

22111105 is an equidigital number, since it uses as much as digits as its factorization.

22111105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4422226.

The product of its (nonzero) digits is 20, while the sum is 13.

The square root of 22111105 is about 4702.2446767475. The cubic root of 22111105 is about 280.6748390737.

Adding to 22111105 its reverse (50111122), we get a palindrome (72222227).

It can be divided in two parts, 2211 and 1105, that multiplied together give a triangular number (2443155 = T₂₂₁₀).

The spelling of 22111105 in words is "twenty-two million, one hundred eleven thousand, one hundred five".