100110091 has 4 divisors (see below), whose sum is σ = 100252000. Its totient is φ = 99968184.

The previous prime is 100110061. The next prime is 100110119. The reversal of 100110091 is 190011001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 100110091 - 2⁹ = 100109579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100110041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69891 + ... + 71308.

It is an arithmetic number, because the mean of its divisors is an integer number (25063000).

Almost surely, 2^100110091 is an apocalyptic number.

100110091 is a deficient number, since it is larger than the sum of its proper divisors (141909).

100110091 is an equidigital number, since it uses as much as digits as its factorization.

100110091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141908.

The product of its (nonzero) digits is 9, while the sum is 13.

The square root of 100110091 is about 10005.5030358298. The cubic root of 100110091 is about 464.3291532780.

Adding to 100110091 its reverse (190011001), we get a palindrome (290121092).

The spelling of 100110091 in words is "one hundred million, one hundred ten thousand, ninety-one".