11111242238 has 4 divisors (see below), whose sum is σ = 16666863360. Its totient is φ = 5555621118.

The previous prime is 11111242217. The next prime is 11111242243. The reversal of 11111242238 is 83224211111.

11111242238 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 2777810558 + ... + 2777810561.

It is an arithmetic number, because the mean of its divisors is an integer number (4166715840).

Almost surely, 2^11111242238 is an apocalyptic number.

11111242238 is a deficient number, since it is larger than the sum of its proper divisors (5555621122).

11111242238 is an equidigital number, since it uses as much as digits as its factorization.

11111242238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5555621121.

The product of its digits is 768, while the sum is 26.

Adding to 11111242238 its reverse (83224211111), we get a palindrome (94335453349).

The spelling of 11111242238 in words is "eleven billion, one hundred eleven million, two hundred forty-two thousand, two hundred thirty-eight".