1103310121 has 4 divisors (see below), whose sum is σ = 1110337732. Its totient is φ = 1096282512.

The previous prime is 1103310083. The next prime is 1103310151. The reversal of 1103310121 is 1210133011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1210133011 = 59 ⋅20510729.

It can be written as a sum of positive squares in 2 ways, for example, as 654336400 + 448973721 = 25580^2 + 21189^2 .

It is a cyclic number.

It is not a de Polignac number, because 1103310121 - 2¹⁵ = 1103277353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1103310151) by changing a digit.

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, 3513570 + ... + 3513883.

It is an arithmetic number, because the mean of its divisors is an integer number (277584433).

Almost surely, 2^1103310121 is an apocalyptic number.

It is an amenable number.

1103310121 is a deficient number, since it is larger than the sum of its proper divisors (7027611).

1103310121 is an equidigital number, since it uses as much as digits as its factorization.

1103310121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7027610.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 1103310121 is about 33216.1123703542. The cubic root of 1103310121 is about 1033.3145246548.

Adding to 1103310121 its reverse (1210133011), we get a palindrome (2313443132).

The spelling of 1103310121 in words is "one billion, one hundred three million, three hundred ten thousand, one hundred twenty-one".