100811005 has 16 divisors (see below), whose sum is σ = 126572544. Its totient is φ = 77000320.

The previous prime is 100810993. The next prime is 100811021. The reversal of 100811005 is 500118001.

It is not a de Polignac number, because 100811005 - 2⁵ = 100810973 is a prime.

It is a super-2 number, since 2×100811005² = 20325717458220050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 100811005.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 4404 + ... + 14866.

It is an arithmetic number, because the mean of its divisors is an integer number (7910784).

Almost surely, 2^100811005 is an apocalyptic number.

It is an amenable number.

100811005 is a deficient number, since it is larger than the sum of its proper divisors (25761539).

100811005 is a wasteful number, since it uses less digits than its factorization.

100811005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10556.

The product of its (nonzero) digits is 40, while the sum is 16.

The square root of 100811005 is about 10040.4683655694. The cubic root of 100811005 is about 465.4102903598.

Adding to 100811005 its reverse (500118001), we get a palindrome (600929006).

The spelling of 100811005 in words is "one hundred million, eight hundred eleven thousand, five".