1111211118 has 12 divisors (see below), whose sum is σ = 2407624128. Its totient is φ = 370403700.

The previous prime is 1111211113. The next prime is 1111211119. The reversal of 1111211118 is 8111121111.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 61733951 = 1111211118 / (1 + 1 + 1 + 1 + 2 + 1 + 1 + 1 + 1 + 8).

It is a self number, because there is not a number n which added to its sum of digits gives 1111211118.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111211111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 30866958 + ... + 30866993.

It is an arithmetic number, because the mean of its divisors is an integer number (200635344).

Almost surely, 2^1111211118 is an apocalyptic number.

1111211118 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1111211118 is an abundant number, since it is smaller than the sum of its proper divisors (1296413010).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1111211118 is a wasteful number, since it uses less digits than its factorization.

1111211118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61733959 (or 61733956 counting only the distinct ones).

The product of its digits is 16, while the sum is 18.

The square root of 1111211118 is about 33334.8334029135. The cubic root of 1111211118 is about 1035.7752421846.

Adding to 1111211118 its reverse (8111121111), we get a palindrome (9222332229).

The spelling of 1111211118 in words is "one billion, one hundred eleven million, two hundred eleven thousand, one hundred eighteen".