11101099999 has 64 divisors (see below), whose sum is σ = 13411215360. Its totient is φ = 9080709120.

The previous prime is 11101099967. The next prime is 11101100009. The reversal of 11101099999 is 99999010111.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 11101099999 - 2⁵ = 11101099967 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11101099199) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 81029859 + ... + 81029995.

It is an arithmetic number, because the mean of its divisors is an integer number (209550240).

Almost surely, 2^11101099999 is an apocalyptic number.

11101099999 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

11101099999 is a deficient number, since it is larger than the sum of its proper divisors (2310115361).

11101099999 is a wasteful number, since it uses less digits than its factorization.

11101099999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400.

The product of its (nonzero) digits is 59049, while the sum is 49.

The spelling of 11101099999 in words is "eleven billion, one hundred one million, ninety-nine thousand, nine hundred ninety-nine".