111111010111010 has 48 divisors (see below), whose sum is σ = 247506114856896. Its totient is φ = 35164803196224.

The previous prime is 111111010111007. The next prime is 111111010111021. The reversal of 111111010111010 is 10111010111111.

It is a junction number, because it is equal to n+sod(n) for n = 111111010110982 and 111111010111000.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 4696142444 + ... + 4696166103.

It is an arithmetic number, because the mean of its divisors is an integer number (5156377392852).

Almost surely, 2^{111111010111010} is an apocalyptic number.

111111010111010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111111010111010 is an abundant number, since it is smaller than the sum of its proper divisors (136395104745886).

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

111111010111010 is a wasteful number, since it uses less digits than its factorization.

111111010111010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9392308587 (or 9392308574 counting only the distinct ones).

The product of its (nonzero) digits is 1, while the sum is 11.

Adding to 111111010111010 its reverse (10111010111111), we get a palindrome (121222020222121).

The spelling of 111111010111010 in words is "one hundred eleven trillion, one hundred eleven billion, ten million, one hundred eleven thousand, ten".