10109911111 has 4 divisors (see below), whose sum is σ = 10118330224. Its totient is φ = 10101492000.

The previous prime is 10109911099. The next prime is 10109911121. The reversal of 10109911111 is 11111990101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11111990101 = 6971 ⋅1594031.

It is a cyclic number.

It is not a de Polignac number, because 10109911111 - 2⁵ = 10109911079 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 (10109911121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4207755 + ... + 4210156.

It is an arithmetic number, because the mean of its divisors is an integer number (2529582556).

Almost surely, 2^10109911111 is an apocalyptic number.

10109911111 is a deficient number, since it is larger than the sum of its proper divisors (8419113).

10109911111 is an equidigital number, since it uses as much as digits as its factorization.

10109911111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8419112.

The product of its (nonzero) digits is 81, while the sum is 25.

The spelling of 10109911111 in words is "ten billion, one hundred nine million, nine hundred eleven thousand, one hundred eleven".