1103323121 has 4 divisors (see below), whose sum is σ = 1115720100. Its totient is φ = 1090926144.

The previous prime is 1103323093. The next prime is 1103323127. The reversal of 1103323121 is 1213233011.

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

It can be written as a sum of positive squares in 2 ways, for example, as 101284096 + 1002039025 = 10064^2 + 31655^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1103323121 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 1103323121.

It is not an unprimeable number, because it can be changed into a prime (1103323127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6198356 + ... + 6198533.

It is an arithmetic number, because the mean of its divisors is an integer number (278930025).

Almost surely, 2^1103323121 is an apocalyptic number.

It is an amenable number.

1103323121 is a deficient number, since it is larger than the sum of its proper divisors (12396979).

1103323121 is an equidigital number, since it uses as much as digits as its factorization.

1103323121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12396978.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1103323121 is about 33216.3080579405. The cubic root of 1103323121 is about 1033.3185830592.

Adding to 1103323121 its reverse (1213233011), we get a palindrome (2316556132).

The spelling of 1103323121 in words is "one billion, one hundred three million, three hundred twenty-three thousand, one hundred twenty-one".