11222555 has 8 divisors (see below), whose sum is σ = 13509744. Its totient is φ = 8949600.

The previous prime is 11222539. The next prime is 11222573. The reversal of 11222555 is 55522211.

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

It is not a de Polignac number, because 11222555 - 2⁴ = 11222539 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a zygodrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 11222555.

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, 1736 + ... + 5045.

It is an arithmetic number, because the mean of its divisors is an integer number (1688718).

Almost surely, 2^11222555 is an apocalyptic number.

11222555 is a deficient number, since it is larger than the sum of its proper divisors (2287189).

11222555 is an equidigital number, since it uses as much as digits as its factorization.

11222555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7117.

The product of its digits is 1000, while the sum is 23.

The square root of 11222555 is about 3350.0082089452. The cubic root of 11222555 is about 223.8878783583.

Adding to 11222555 its reverse (55522211), we get a palindrome (66744766).

The spelling of 11222555 in words is "eleven million, two hundred twenty-two thousand, five hundred fifty-five".