100109201091 has 4 divisors (see below), whose sum is σ = 133478934792. Its totient is φ = 66739467392.

The previous prime is 100109201089. The next prime is 100109201111. The reversal of 100109201091 is 190102901001.

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 100109201091 - 2¹ = 100109201089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (100109201051) 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, 16684866846 + ... + 16684866851.

It is an arithmetic number, because the mean of its divisors is an integer number (33369733698).

Almost surely, 2^100109201091 is an apocalyptic number.

100109201091 is a deficient number, since it is larger than the sum of its proper divisors (33369733701).

100109201091 is an equidigital number, since it uses as much as digits as its factorization.

100109201091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33369733700.

The product of its (nonzero) digits is 162, while the sum is 24.

The spelling of 100109201091 in words is "one hundred billion, one hundred nine million, two hundred one thousand, ninety-one".