1112231555 has 4 divisors (see below), whose sum is σ = 1334677872. Its totient is φ = 889785240.

The previous prime is 1112231513. The next prime is 1112231563. The reversal of 1112231555 is 5551322111.

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

It is a de Polignac number, because none of the positive numbers 2^k-1112231555 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111223151 + ... + 111223160.

It is an arithmetic number, because the mean of its divisors is an integer number (333669468).

Almost surely, 2^1112231555 is an apocalyptic number.

1112231555 is a deficient number, since it is larger than the sum of its proper divisors (222446317).

1112231555 is an equidigital number, since it uses as much as digits as its factorization.

1112231555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222446316.

The product of its digits is 1500, while the sum is 26.

The square root of 1112231555 is about 33350.1357568451. The cubic root of 1112231555 is about 1036.0921996600.

Adding to 1112231555 its reverse (5551322111), we get a palindrome (6663553666).

The spelling of 1112231555 in words is "one billion, one hundred twelve million, two hundred thirty-one thousand, five hundred fifty-five".