100910091091 has 4 divisors (see below), whose sum is σ = 100980708400. Its totient is φ = 100839473784.

The previous prime is 100910091089. The next prime is 100910091101. The reversal of 100910091091 is 190190019001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 190190019001 = 318209 ⋅597689.

It is a cyclic number.

It is not a de Polignac number, because 100910091091 - 2¹ = 100910091089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100910091031) 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, 35306511 + ... + 35309368.

It is an arithmetic number, because the mean of its divisors is an integer number (25245177100).

Almost surely, 2^100910091091 is an apocalyptic number.

100910091091 is a deficient number, since it is larger than the sum of its proper divisors (70617309).

100910091091 is an equidigital number, since it uses as much as digits as its factorization.

100910091091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70617308.

The product of its (nonzero) digits is 729, while the sum is 31.

The spelling of 100910091091 in words is "one hundred billion, nine hundred ten million, ninety-one thousand, ninety-one".