11222005 has 4 divisors (see below), whose sum is σ = 13466412. Its totient is φ = 8977600.

The previous prime is 11221993. The next prime is 11222021. The reversal of 11222005 is 50022211.

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 3122289 + 8099716 = 1767^2 + 2846^2 .

It is not a de Polignac number, because 11222005 - 2¹⁵ = 11189237 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 3 ways as a sum of consecutive naturals, for example, 1122196 + ... + 1122205.

It is an arithmetic number, because the mean of its divisors is an integer number (3366603).

Almost surely, 2^11222005 is an apocalyptic number.

It is an amenable number.

11222005 is a deficient number, since it is larger than the sum of its proper divisors (2244407).

11222005 is an equidigital number, since it uses as much as digits as its factorization.

11222005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2244406.

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 11222005 is about 3349.9261185883. The cubic root of 11222005 is about 223.8842208328.

Adding to 11222005 its reverse (50022211), we get a palindrome (61244216).

The spelling of 11222005 in words is "eleven million, two hundred twenty-two thousand, five".