10111222118 has 4 divisors (see below), whose sum is σ = 15166833180. Its totient is φ = 5055611058.

The previous prime is 10111222111. The next prime is 10111222123. The reversal of 10111222118 is 81122211101.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81122211101 = 86381 ⋅939121.

It is a self number, because there is not a number n which added to its sum of digits gives 10111222118.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10111222111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2527805528 + ... + 2527805531.

It is an arithmetic number, because the mean of its divisors is an integer number (3791708295).

Almost surely, 2^10111222118 is an apocalyptic number.

10111222118 is a deficient number, since it is larger than the sum of its proper divisors (5055611062).

10111222118 is an equidigital number, since it uses as much as digits as its factorization.

10111222118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5055611061.

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 10111222118 its reverse (81122211101), we get a palindrome (91233433219).

The spelling of 10111222118 in words is "ten billion, one hundred eleven million, two hundred twenty-two thousand, one hundred eighteen".