11111212318 has 16 divisors (see below), whose sum is σ = 16783517520. Its totient is φ = 5516842176.

The previous prime is 11111212289. The next prime is 11111212319. The reversal of 11111212318 is 81321211111.

11111212318 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11111212319) 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 7 ways as a sum of consecutive naturals, for example, 131530 + ... + 198802.

It is an arithmetic number, because the mean of its divisors is an integer number (1048969845).

Almost surely, 2^11111212318 is an apocalyptic number.

11111212318 is a deficient number, since it is larger than the sum of its proper divisors (5672305202).

11111212318 is a wasteful number, since it uses less digits than its factorization.

11111212318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67851.

The product of its digits is 96, while the sum is 22.

Adding to 11111212318 its reverse (81321211111), we get a palindrome (92432423429).

The spelling of 11111212318 in words is "eleven billion, one hundred eleven million, two hundred twelve thousand, three hundred eighteen".