111122102011 has 4 divisors (see below), whose sum is σ = 113832397224. Its totient is φ = 108411806800.

The previous prime is 111122101913. The next prime is 111122102023. The reversal of 111122102011 is 110201221111.

It is a happy number.

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 111122102011 - 2⁹ = 111122101499 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111122101982 and 111122102000.

It is not an unprimeable number, because it can be changed into a prime (111122102041) 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, 1355147545 + ... + 1355147626.

It is an arithmetic number, because the mean of its divisors is an integer number (28458099306).

Almost surely, 2^111122102011 is an apocalyptic number.

111122102011 is a deficient number, since it is larger than the sum of its proper divisors (2710295213).

111122102011 is an equidigital number, since it uses as much as digits as its factorization.

111122102011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2710295212.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 111122102011 its reverse (110201221111), we get a palindrome (221323323122).

The spelling of 111122102011 in words is "one hundred eleven billion, one hundred twenty-two million, one hundred two thousand, eleven".