111122222222111 has 16 divisors (see below), whose sum is σ = 117733958957664. Its totient is φ = 104518838774784.

The previous prime is 111122222222083. The next prime is 111122222222119. The reversal of 111122222222111 is 111222222221111.

It is not a de Polignac number, because 111122222222111 - 2⁶ = 111122222222047 is a prime.

It is a Duffinian number.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111122222222119) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 936629651 + ... + 936748283.

It is an arithmetic number, because the mean of its divisors is an integer number (7358372434854).

Almost surely, 2^{111122222222111} is an apocalyptic number.

111122222222111 is a deficient number, since it is larger than the sum of its proper divisors (6611736735553).

111122222222111 is a wasteful number, since it uses less digits than its factorization.

111122222222111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153370.

The product of its digits is 256, while the sum is 23.

Adding to 111122222222111 its reverse (111222222221111), we get a palindrome (222344444443222).

The spelling of 111122222222111 in words is "one hundred eleven trillion, one hundred twenty-two billion, two hundred twenty-two million, two hundred twenty-two thousand, one hundred eleven".