1099900111 has 4 divisors (see below), whose sum is σ = 1100161792. Its totient is φ = 1099638432.

The previous prime is 1099900103. The next prime is 1099900117. The reversal of 1099900111 is 1110099901.

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

It is a cyclic number.

It is not a de Polignac number, because 1099900111 - 2³ = 1099900103 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 (1099900117) 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, 124431 + ... + 132976.

It is an arithmetic number, because the mean of its divisors is an integer number (275040448).

Almost surely, 2^1099900111 is an apocalyptic number.

1099900111 is a deficient number, since it is larger than the sum of its proper divisors (261681).

1099900111 is an equidigital number, since it uses as much as digits as its factorization.

1099900111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261680.

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

The square root of 1099900111 is about 33164.7419860309. The cubic root of 1099900111 is about 1032.2488680170.

It can be divided in two parts, 1099900 and 111, that added together give a palindrome (1100011).

The spelling of 1099900111 in words is "one billion, ninety-nine million, nine hundred thousand, one hundred eleven".