888889111111 has 16 divisors (see below), whose sum is σ = 960001920000. Its totient is φ = 820511179488.

The previous prime is 888889111109. The next prime is 888889111163. The reversal of 888889111111 is 111111988888.

888889111111 is a nontrivial binomial coefficient, being equal to C(1333334, 2).

It is a 5-Lehmer number, since φ(888889111111) divides (888889111111-1)⁵.

It is a cyclic number.

It is not a de Polignac number, because 888889111111 - 2¹ = 888889111109 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 (888889111211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1000000 + ... + 1666666.

It is an arithmetic number, because the mean of its divisors is an integer number (60000120000).

Almost surely, 2^888889111111 is an apocalyptic number.

888889111111 is the 1333333-rd triangular number and also the 666667-th hexagonal number.

888889111111 is the 444445-th centered nonagonal number.

888889111111 is a deficient number, since it is larger than the sum of its proper divisors (71112808889).

888889111111 is a wasteful number, since it uses less digits than its factorization.

888889111111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 668718.

The product of its digits is 294912, while the sum is 55.

It can be divided in two parts, 888889 and 111111, that added together give a 6-th power (1000000 = 10⁶).

The spelling of 888889111111 in words is "eight hundred eighty-eight billion, eight hundred eighty-nine million, one hundred eleven thousand, one hundred eleven".