1123022155 has 4 divisors (see below), whose sum is σ = 1347626592. Its totient is φ = 898417720.

The previous prime is 1123022149. The next prime is 1123022167. The reversal of 1123022155 is 5512203211.

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

It is not a de Polignac number, because 1123022155 - 2⁹ = 1123021643 is a prime.

It is a super-2 number, since 2×1123022155² = 2522357521241688050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112302211 + ... + 112302220.

It is an arithmetic number, because the mean of its divisors is an integer number (336906648).

Almost surely, 2^1123022155 is an apocalyptic number.

1123022155 is a deficient number, since it is larger than the sum of its proper divisors (224604437).

1123022155 is an equidigital number, since it uses as much as digits as its factorization.

1123022155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224604436.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 1123022155 is about 33511.5227198049. The cubic root of 1123022155 is about 1039.4320601607.

Adding to 1123022155 its reverse (5512203211), we get a palindrome (6635225366).

The spelling of 1123022155 in words is "one billion, one hundred twenty-three million, twenty-two thousand, one hundred fifty-five".