11111101099 has 4 divisors (see below), whose sum is σ = 12698401264. Its totient is φ = 9523800936.

The previous prime is 11111101091. The next prime is 11111101103. The reversal of 11111101099 is 99010111111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99010111111 = 17 ⋅5824124183.

It is a cyclic number.

It is not a de Polignac number, because 11111101099 - 2³ = 11111101091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11111101091) 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, 793650072 + ... + 793650085.

It is an arithmetic number, because the mean of its divisors is an integer number (3174600316).

Almost surely, 2^11111101099 is an apocalyptic number.

11111101099 is a deficient number, since it is larger than the sum of its proper divisors (1587300165).

11111101099 is an equidigital number, since it uses as much as digits as its factorization.

11111101099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1587300164.

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

The spelling of 11111101099 in words is "eleven billion, one hundred eleven million, one hundred one thousand, ninety-nine".