11321112111 has 32 divisors (see below), whose sum is σ = 15908344320. Its totient is φ = 7152292224.

The previous prime is 11321112097. The next prime is 11321112113. The reversal of 11321112111 is 11121112311.

It is not a de Polignac number, because 11321112111 - 2⁵ = 11321112079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11321112113) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1777150 + ... + 1783508.

It is an arithmetic number, because the mean of its divisors is an integer number (497135760).

Almost surely, 2^11321112111 is an apocalyptic number.

11321112111 is a deficient number, since it is larger than the sum of its proper divisors (4587232209).

11321112111 is a wasteful number, since it uses less digits than its factorization.

11321112111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6815.

The product of its digits is 12, while the sum is 15.

Adding to 11321112111 its reverse (11121112311), we get a palindrome (22442224422).

The spelling of 11321112111 in words is "eleven billion, three hundred twenty-one million, one hundred twelve thousand, one hundred eleven".