1117222555 has 4 divisors (see below), whose sum is σ = 1340667072. Its totient is φ = 893778040.

The previous prime is 1117222523. The next prime is 1117222583. The reversal of 1117222555 is 5552227111.

It is a happy number.

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

It is not a de Polignac number, because 1117222555 - 2⁵ = 1117222523 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a nialpdrome in base 14.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111722251 + ... + 111722260.

It is an arithmetic number, because the mean of its divisors is an integer number (335166768).

Almost surely, 2^1117222555 is an apocalyptic number.

1117222555 is a deficient number, since it is larger than the sum of its proper divisors (223444517).

1117222555 is an equidigital number, since it uses as much as digits as its factorization.

1117222555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223444516.

The product of its digits is 7000, while the sum is 31.

The square root of 1117222555 is about 33424.8792817566. The cubic root of 1117222555 is about 1037.6396653319.

Adding to 1117222555 its reverse (5552227111), we get a palindrome (6669449666).

The spelling of 1117222555 in words is "one billion, one hundred seventeen million, two hundred twenty-two thousand, five hundred fifty-five".