11111333122111 has 8 divisors (see below), whose sum is σ = 11137003357824. Its totient is φ = 11085665536920.

The previous prime is 11111333122067. The next prime is 11111333122159. The reversal of 11111333122111 is 11122133311111.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11111333122111 - 2¹⁹ = 11111332597823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11111333122811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7857670 + ... + 9163276.

It is an arithmetic number, because the mean of its divisors is an integer number (1392125419728).

Almost surely, 2^{11111333122111} is an apocalyptic number.

11111333122111 is a deficient number, since it is larger than the sum of its proper divisors (25670235713).

11111333122111 is a wasteful number, since it uses less digits than its factorization.

11111333122111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1325261.

The product of its digits is 108, while the sum is 22.

Adding to 11111333122111 its reverse (11122133311111), we get a palindrome (22233466433222).

The spelling of 11111333122111 in words is "eleven trillion, one hundred eleven billion, three hundred thirty-three million, one hundred twenty-two thousand, one hundred eleven".