1121103 has 6 divisors (see below), whose sum is σ = 1619384. Its totient is φ = 747396.

The previous prime is 1121101. The next prime is 1121143. The reversal of 1121103 is 3011211.

It is not a de Polignac number, because 1121103 - 2¹ = 1121101 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 124567 = 1121103 / (1 + 1 + 2 + 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 (1121101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 62275 + ... + 62292.

2^1121103 is an apocalyptic number.

1121103 is a deficient number, since it is larger than the sum of its proper divisors (498281).

1121103 is a wasteful number, since it uses less digits than its factorization.

1121103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124573 (or 124570 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

The square root of 1121103 is about 1058.8215147040. The cubic root of 1121103 is about 103.8839620483.

Adding to 1121103 its reverse (3011211), we get a palindrome (4132314).

It can be divided in two parts, 1 and 121103, that added together give a square (121104 = 348²).

The spelling of 1121103 in words is "one million, one hundred twenty-one thousand, one hundred three".