100000100091 has 8 divisors (see below), whose sum is σ = 133342457680. Its totient is φ = 66662237952.

The previous prime is 100000100087. The next prime is 100000100113. The reversal of 100000100091 is 190001000001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 100000100091 - 2² = 100000100087 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100000100191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1071610 + ... + 1161183.

It is an arithmetic number, because the mean of its divisors is an integer number (16667807210).

Almost surely, 2^100000100091 is an apocalyptic number.

100000100091 is a deficient number, since it is larger than the sum of its proper divisors (33342357589).

100000100091 is a wasteful number, since it uses less digits than its factorization.

100000100091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2247725.

The product of its (nonzero) digits is 9, while the sum is 12.

Adding to 100000100091 its reverse (190001000001), we get a palindrome (290001100092).

The spelling of 100000100091 in words is "one hundred billion, one hundred thousand, ninety-one".