22222205 has 8 divisors (see below), whose sum is σ = 27317304. Its totient is φ = 17344000.

The previous prime is 22222199. The next prime is 22222223. The reversal of 22222205 is 50222222.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 47524 + 22174681 = 218^2 + 4709^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22222205 - 2⁸ = 22221949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53996 + ... + 54405.

It is an arithmetic number, because the mean of its divisors is an integer number (3414663).

Almost surely, 2^22222205 is an apocalyptic number.

It is an amenable number.

22222205 is a deficient number, since it is larger than the sum of its proper divisors (5095099).

22222205 is a wasteful number, since it uses less digits than its factorization.

22222205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108447.

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 22222205 is about 4714.0433812174. The cubic root of 22222205 is about 281.1441491383.

Adding to 22222205 its sum of digits (17), we get a palindrome (22222222).

Adding to 22222205 its reverse (50222222), we get a palindrome (72444427).

The spelling of 22222205 in words is "twenty-two million, two hundred twenty-two thousand, two hundred five".