1100099999 has 16 divisors (see below), whose sum is σ = 1130100768. Its totient is φ = 1070618112.

The previous prime is 1100099993. The next prime is 1100100041. The reversal of 1100099999 is 9999900011.

It is a cyclic number.

It is not a de Polignac number, because 1100099999 - 2⁸ = 1100099743 is a prime.

It is a Duffinian number.

1100099999 is a modest number, since divided by 99999 gives 11000 as remainder.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100099993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3170144 + ... + 3170490.

It is an arithmetic number, because the mean of its divisors is an integer number (70631298).

Almost surely, 2^1100099999 is an apocalyptic number.

1100099999 is a deficient number, since it is larger than the sum of its proper divisors (30000769).

1100099999 is a wasteful number, since it uses less digits than its factorization.

1100099999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 874.

The product of its (nonzero) digits is 59049, while the sum is 47.

The square root of 1100099999 is about 33167.7554109409. The cubic root of 1100099999 is about 1032.3113954113.

It can be divided in two parts, 1100099 and 999, that multiplied together give a palindrome (1098998901).

The spelling of 1100099999 in words is "one billion, one hundred million, ninety-nine thousand, nine hundred ninety-nine".