11111011111110 has 64 divisors (see below), whose sum is σ = 26808229001664. Its totient is φ = 2947187712000.

The previous prime is 11111011111087. The next prime is 11111011111127. The reversal of 11111011111110 is 1111111011111.

It is a super-2 number, since 2×11111011111110² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24604150 + ... + 25051670.

It is an arithmetic number, because the mean of its divisors is an integer number (418878578151).

Almost surely, 2^{11111011111110} is an apocalyptic number.

11111011111110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11111011111110 is an abundant number, since it is smaller than the sum of its proper divisors (15697217890554).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11111011111110 is a wasteful number, since it uses less digits than its factorization.

11111011111110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451929.

The product of its (nonzero) digits is 1, while the sum is 12.

Adding to 11111011111110 its reverse (1111111011111), we get a palindrome (12222122122221).

Subtracting from 11111011111110 its reverse (1111111011111), we obtain a palindrome (9999900099999).

The spelling of 11111011111110 in words is "eleven trillion, one hundred eleven billion, eleven million, one hundred eleven thousand, one hundred ten".