1103320320121 has 4 divisors (see below), whose sum is σ = 1105156128244. Its totient is φ = 1101484512000.

The previous prime is 1103320320101. The next prime is 1103320320161. The reversal of 1103320320121 is 1210230233011.

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 711990002025 + 391330318096 = 843795^2 + 625564^2 .

It is a cyclic number.

It is not a de Polignac number, because 1103320320121 - 2¹⁵ = 1103320287353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1103320320101) 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, 917903160 + ... + 917904361.

It is an arithmetic number, because the mean of its divisors is an integer number (276289032061).

Almost surely, 2^{1103320320121} is an apocalyptic number.

It is an amenable number.

1103320320121 is a deficient number, since it is larger than the sum of its proper divisors (1835808123).

1103320320121 is an equidigital number, since it uses as much as digits as its factorization.

1103320320121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1835808122.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 1103320320121 its reverse (1210230233011), we get a palindrome (2313550553132).

The spelling of 1103320320121 in words is "one trillion, one hundred three billion, three hundred twenty million, three hundred twenty thousand, one hundred twenty-one".