11111111122 has 8 divisors (see below), whose sum is σ = 16710183936. Its totient is φ = 5541049812.

The previous prime is 11111111113. The next prime is 11111111129. The reversal of 11111111122 is 22111111111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a nude number because it is divisible by every one of its digits.

It is a plaindrome in base 10.

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (11111111129) 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, 7251918 + ... + 7253449.

It is an arithmetic number, because the mean of its divisors is an integer number (2088772992).

Almost surely, 2^11111111122 is an apocalyptic number.

11111111122 is a deficient number, since it is larger than the sum of its proper divisors (5599072814).

11111111122 is a wasteful number, since it uses less digits than its factorization.

11111111122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14505752.

The product of its digits is 4, while the sum is 13.

Adding to 11111111122 its reverse (22111111111), we get a palindrome (33222222233).

It can be divided in two parts, 111111111 and 22, that multiplied together give a palindrome (2444444442).

The spelling of 11111111122 in words is "eleven billion, one hundred eleven million, one hundred eleven thousand, one hundred twenty-two".