1121133155 has 4 divisors (see below), whose sum is σ = 1345359792. Its totient is φ = 896906520.

The previous prime is 1121133103. The next prime is 1121133227. The reversal of 1121133155 is 5513311211.

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

It is not a de Polignac number, because 1121133155 - 2⁸ = 1121132899 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1121133155.

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, 112113311 + ... + 112113320.

It is an arithmetic number, because the mean of its divisors is an integer number (336339948).

Almost surely, 2^1121133155 is an apocalyptic number.

1121133155 is a deficient number, since it is larger than the sum of its proper divisors (224226637).

1121133155 is an equidigital number, since it uses as much as digits as its factorization.

1121133155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224226636.

The product of its digits is 450, while the sum is 23.

The square root of 1121133155 is about 33483.3265223156. The cubic root of 1121133155 is about 1038.8489345031.

Adding to 1121133155 its reverse (5513311211), we get a palindrome (6634444366).

The spelling of 1121133155 in words is "one billion, one hundred twenty-one million, one hundred thirty-three thousand, one hundred fifty-five".