100001105 has 4 divisors (see below), whose sum is σ = 120001332. Its totient is φ = 80000880.

The previous prime is 100001087. The next prime is 100001107. The reversal of 100001105 is 501100001.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 501100001 = 53 ⋅9454717.

It can be written as a sum of positive squares in 2 ways, for example, as 77457601 + 22543504 = 8801^2 + 4748^2 .

It is not a de Polignac number, because 100001105 - 2¹⁰ = 100000081 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100001092 and 100001101.

It is not an unprimeable number, because it can be changed into a prime (100001107) 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, 10000106 + ... + 10000115.

It is an arithmetic number, because the mean of its divisors is an integer number (30000333).

Almost surely, 2^100001105 is an apocalyptic number.

It is an amenable number.

100001105 is a deficient number, since it is larger than the sum of its proper divisors (20000227).

100001105 is an equidigital number, since it uses as much as digits as its factorization.

100001105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20000226.

The product of its (nonzero) digits is 5, while the sum is 8.

The square root of 100001105 is about 10000.0552498474. The cubic root of 100001105 is about 464.1605930069.

Adding to 100001105 its reverse (501100001), we get a palindrome (601101106).

The spelling of 100001105 in words is "one hundred million, one thousand, one hundred five".