1111001099 has 6 divisors (see below), whose sum is σ = 1203036876. Its totient is φ = 1025539320.

The previous prime is 1111001053. The next prime is 1111001141. The reversal of 1111001099 is 9901001111.

It is a happy number.

It is not a de Polignac number, because 1111001099 - 2⁸ = 1111000843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1111001999) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3286817 + ... + 3287154.

It is an arithmetic number, because the mean of its divisors is an integer number (200506146).

Almost surely, 2^1111001099 is an apocalyptic number.

1111001099 is a deficient number, since it is larger than the sum of its proper divisors (92035777).

1111001099 is an equidigital number, since it uses as much as digits as its factorization.

1111001099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6573997 (or 6573984 counting only the distinct ones).

The product of its (nonzero) digits is 81, while the sum is 23.

The square root of 1111001099 is about 33331.6831108182. The cubic root of 1111001099 is about 1035.7099842023.

The spelling of 1111001099 in words is "one billion, one hundred eleven million, one thousand, ninety-nine".