1121301103 has 4 divisors (see below), whose sum is σ = 1207555048. Its totient is φ = 1035047160.

The previous prime is 1121301061. The next prime is 1121301107. The reversal of 1121301103 is 3011031211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3011031211 = 17 ⋅177119483.

It is a cyclic number.

It is not a de Polignac number, because 1121301103 - 2⁹ = 1121300591 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13), and also a Moran number because the ratio is a prime number: 86253931 = 1121301103 / (1 + 1 + 2 + 1 + 3 + 0 + 1 + 1 + 0 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121301107) 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, 43126953 + ... + 43126978.

It is an arithmetic number, because the mean of its divisors is an integer number (301888762).

Almost surely, 2^1121301103 is an apocalyptic number.

1121301103 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1121301103 is a deficient number, since it is larger than the sum of its proper divisors (86253945).

1121301103 is an equidigital number, since it uses as much as digits as its factorization.

1121301103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86253944.

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

The square root of 1121301103 is about 33485.8343632050. The cubic root of 1121301103 is about 1038.9008057991.

Adding to 1121301103 its reverse (3011031211), we get a palindrome (4132332314).

The spelling of 1121301103 in words is "one billion, one hundred twenty-one million, three hundred one thousand, one hundred three".