1100120911 has 4 divisors (see below), whose sum is σ = 1100354112. Its totient is φ = 1099887712.

The previous prime is 1100120837. The next prime is 1100120929. The reversal of 1100120911 is 1190210011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1190210011 = 103 ⋅11555437.

It is a cyclic number.

It is not a de Polignac number, because 1100120911 - 2⁷ = 1100120783 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 (1100120971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109375 + ... + 119008.

It is an arithmetic number, because the mean of its divisors is an integer number (275088528).

Almost surely, 2^1100120911 is an apocalyptic number.

1100120911 is a deficient number, since it is larger than the sum of its proper divisors (233201).

1100120911 is an equidigital number, since it uses as much as digits as its factorization.

1100120911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233200.

The product of its (nonzero) digits is 18, while the sum is 16.

The square root of 1100120911 is about 33168.0706553758. The cubic root of 1100120911 is about 1032.3179365013.

Adding to 1100120911 its reverse (1190210011), we get a palindrome (2290330922).

The spelling of 1100120911 in words is "one billion, one hundred million, one hundred twenty thousand, nine hundred eleven".