1103112011 has 4 divisors (see below), whose sum is σ = 1130017224. Its totient is φ = 1076206800.

The previous prime is 1103111857. The next prime is 1103112037. The reversal of 1103112011 is 1102113011.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1103112011 is a prime.

It is a super-2 number, since 2×1103112011² = 2433712217624928242, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1103111983 and 1103112001.

It is not an unprimeable number, because it can be changed into a prime (1103112041) 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, 13452545 + ... + 13452626.

It is an arithmetic number, because the mean of its divisors is an integer number (282504306).

Almost surely, 2^1103112011 is an apocalyptic number.

1103112011 is a deficient number, since it is larger than the sum of its proper divisors (26905213).

1103112011 is an equidigital number, since it uses as much as digits as its factorization.

1103112011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26905212.

The product of its (nonzero) digits is 6, while the sum is 11.

The square root of 1103112011 is about 33213.1300994050. The cubic root of 1103112011 is about 1033.2526737480.

Adding to 1103112011 its reverse (1102113011), we get a palindrome (2205225022).

The spelling of 1103112011 in words is "one billion, one hundred three million, one hundred twelve thousand, eleven".