1103120011 has 4 divisors (see below), whose sum is σ = 1260708592. Its totient is φ = 945531432.

The previous prime is 1103119999. The next prime is 1103120063. The reversal of 1103120011 is 1100213011.

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 1103120011 - 2¹³ = 1103111819 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1103120011.

It is not an unprimeable number, because it can be changed into a prime (1103120911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78794280 + ... + 78794293.

It is an arithmetic number, because the mean of its divisors is an integer number (315177148).

Almost surely, 2^1103120011 is an apocalyptic number.

1103120011 is a deficient number, since it is larger than the sum of its proper divisors (157588581).

1103120011 is an equidigital number, since it uses as much as digits as its factorization.

1103120011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157588580.

The product of its (nonzero) digits is 6, while the sum is 10.

The square root of 1103120011 is about 33213.2505334844. The cubic root of 1103120011 is about 1033.2551715304.

Adding to 1103120011 its reverse (1100213011), we get a palindrome (2203333022).

The spelling of 1103120011 in words is "one billion, one hundred three million, one hundred twenty thousand, eleven".