1103323121111 has 4 divisors (see below), whose sum is σ = 1103355456792. Its totient is φ = 1103290785432.

The previous prime is 1103323121083. The next prime is 1103323121171. The reversal of 1103323121111 is 1111213233011.

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-1103323121111 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 (1103323121171) 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, 16116605 + ... + 16184918.

It is an arithmetic number, because the mean of its divisors is an integer number (275838864198).

Almost surely, 2^{1103323121111} is an apocalyptic number.

1103323121111 is a deficient number, since it is larger than the sum of its proper divisors (32335681).

1103323121111 is an equidigital number, since it uses as much as digits as its factorization.

1103323121111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32335680.

The product of its (nonzero) digits is 108, while the sum is 20.

Adding to 1103323121111 its reverse (1111213233011), we get a palindrome (2214536354122).

The spelling of 1103323121111 in words is "one trillion, one hundred three billion, three hundred twenty-three million, one hundred twenty-one thousand, one hundred eleven".