10001100191 has 4 divisors (see below), whose sum is σ = 10001300232. Its totient is φ = 10000900152.

The previous prime is 10001100163. The next prime is 10001100199. The reversal of 10001100191 is 19100110001.

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: 19100110001 = 7 ⋅2728587143.

It is a cyclic number.

It is not a de Polignac number, because 10001100191 - 2³⁰ = 8927358367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10001100199) 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, 47456 + ... + 149178.

It is an arithmetic number, because the mean of its divisors is an integer number (2500325058).

Almost surely, 2^10001100191 is an apocalyptic number.

10001100191 is a deficient number, since it is larger than the sum of its proper divisors (200041).

10001100191 is an equidigital number, since it uses as much as digits as its factorization.

10001100191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200040.

The product of its (nonzero) digits is 9, while the sum is 14.

Adding to 10001100191 its reverse (19100110001), we get a palindrome (29101210192).

The spelling of 10001100191 in words is "ten billion, one million, one hundred thousand, one hundred ninety-one".