1123021103 has 16 divisors (see below), whose sum is σ = 1159503360. Its totient is φ = 1087257600.

The previous prime is 1123021093. The next prime is 1123021111. The reversal of 1123021103 is 3011203211.

It is a cyclic number.

It is not a de Polignac number, because 1123021103 - 2¹⁶ = 1122955567 is a prime.

It is a super-2 number, since 2×1123021103² = 2522352795566673218, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123021183) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1751663 + ... + 1752303.

It is an arithmetic number, because the mean of its divisors is an integer number (72468960).

Almost surely, 2^1123021103 is an apocalyptic number.

1123021103 is a deficient number, since it is larger than the sum of its proper divisors (36482257).

1123021103 is an equidigital number, since it uses as much as digits as its factorization.

1123021103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1118.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1123021103 is about 33511.5070237075. The cubic root of 1123021103 is about 1039.4317355952.

Adding to 1123021103 its reverse (3011203211), we get a palindrome (4134224314).

The spelling of 1123021103 in words is "one billion, one hundred twenty-three million, twenty-one thousand, one hundred three".