11112323111 has 4 divisors (see below), whose sum is σ = 11383355424. Its totient is φ = 10841290800.

The previous prime is 11112323093. The next prime is 11112323141. The reversal of 11112323111 is 11132321111.

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 11112323111 - 2¹⁴ = 11112306727 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 11112323111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11112323141) 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, 135516095 + ... + 135516176.

It is an arithmetic number, because the mean of its divisors is an integer number (2845838856).

Almost surely, 2^11112323111 is an apocalyptic number.

11112323111 is a deficient number, since it is larger than the sum of its proper divisors (271032313).

11112323111 is an equidigital number, since it uses as much as digits as its factorization.

11112323111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271032312.

The product of its digits is 36, while the sum is 17.

Adding to 11112323111 its reverse (11132321111), we get a palindrome (22244644222).

The spelling of 11112323111 in words is "eleven billion, one hundred twelve million, three hundred twenty-three thousand, one hundred eleven".