1105121 has 4 divisors (see below), whose sum is σ = 1116612. Its totient is φ = 1093632.

The previous prime is 1105109. The next prime is 1105141. The reversal of 1105121 is 1215011.

1105121 = 55² + 56² + ... + 151².

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1215011 = 7 ⋅173573.

It can be written as a sum of positive squares in 2 ways, for example, as 664225 + 440896 = 815^2 + 664^2 .

It is a cyclic number.

It is not a de Polignac number, because 1105121 - 2¹⁰ = 1104097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1105141) 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, 5600 + ... + 5793.

It is an arithmetic number, because the mean of its divisors is an integer number (279153).

2^1105121 is an apocalyptic number.

It is an amenable number.

1105121 is a deficient number, since it is larger than the sum of its proper divisors (11491).

1105121 is an equidigital number, since it uses as much as digits as its factorization.

1105121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11490.

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

The square root of 1105121 is about 1051.2473543367. The cubic root of 1105121 is about 103.3879547043.

The spelling of 1105121 in words is "one million, one hundred five thousand, one hundred twenty-one".