11112211110111 has 32 divisors (see below), whose sum is σ = 15645382588416. Its totient is φ = 7006168224000.

The previous prime is 11112211110107. The next prime is 11112211110131. The reversal of 11112211110111 is 11101111221111.

It is a happy number.

It is not a de Polignac number, because 11112211110111 - 2² = 11112211110107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11112211110101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3271675 + ... + 5738316.

It is an arithmetic number, because the mean of its divisors is an integer number (488918205888).

Almost surely, 2^{11112211110111} is an apocalyptic number.

11112211110111 is a deficient number, since it is larger than the sum of its proper divisors (4533171478305).

11112211110111 is a wasteful number, since it uses less digits than its factorization.

11112211110111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9010343.

The product of its (nonzero) digits is 4, while the sum is 15.

Adding to 11112211110111 its reverse (11101111221111), we get a palindrome (22213322331222).

The spelling of 11112211110111 in words is "eleven trillion, one hundred twelve billion, two hundred eleven million, one hundred ten thousand, one hundred eleven".