1121105 has 4 divisors (see below), whose sum is σ = 1345332. Its totient is φ = 896880.

The previous prime is 1121101. The next prime is 1121143. The reversal of 1121105 is 5011211.

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 258064 + 863041 = 508^2 + 929^2 .

It is not a de Polignac number, because 1121105 - 2² = 1121101 is a prime.

It is a Duffinian number.

It is a Curzon 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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112106 + ... + 112115.

It is an arithmetic number, because the mean of its divisors is an integer number (336333).

2^1121105 is an apocalyptic number.

It is an amenable number.

1121105 is a deficient number, since it is larger than the sum of its proper divisors (224227).

1121105 is an equidigital number, since it uses as much as digits as its factorization.

1121105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224226.

The product of its (nonzero) digits is 10, while the sum is 11.

The square root of 1121105 is about 1058.8224591498. The cubic root of 1121105 is about 103.8840238231.

Adding to 1121105 its reverse (5011211), we get a palindrome (6132316).

The spelling of 1121105 in words is "one million, one hundred twenty-one thousand, one hundred five".