111099209111 has 4 divisors (see below), whose sum is σ = 121199137224. Its totient is φ = 100999281000.

The previous prime is 111099209093. The next prime is 111099209141. The reversal of 111099209111 is 111902990111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111099209111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111099209141) 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, 5049964040 + ... + 5049964061.

It is an arithmetic number, because the mean of its divisors is an integer number (30299784306).

Almost surely, 2^111099209111 is an apocalyptic number.

111099209111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

111099209111 is a deficient number, since it is larger than the sum of its proper divisors (10099928113).

111099209111 is a wasteful number, since it uses less digits than its factorization.

111099209111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10099928112.

The product of its (nonzero) digits is 1458, while the sum is 35.

The spelling of 111099209111 in words is "one hundred eleven billion, ninety-nine million, two hundred nine thousand, one hundred eleven".