111111101101010 has 16 divisors (see below), whose sum is σ = 202531627324800. Its totient is φ = 43881852586416.

The previous prime is 111111101100941. The next prime is 111111101101069. The reversal of 111111101101010 is 10101101111111.

It is a junction number, because it is equal to n+sod(n) for n = 111111101100982 and 111111101101000.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70323480920 + ... + 70323482499.

It is an arithmetic number, because the mean of its divisors is an integer number (12658226707800).

Almost surely, 2^{111111101101010} is an apocalyptic number.

111111101101010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111111101101010 is a deficient number, since it is larger than the sum of its proper divisors (91420526223790).

111111101101010 is a wasteful number, since it uses less digits than its factorization.

111111101101010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140646963505.

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

Adding to 111111101101010 its reverse (10101101111111), we get a palindrome (121212202212121).

It can be divided in two parts, 111111101 and 101010, that added together give a palindrome (111212111).

The spelling of 111111101101010 in words is "one hundred eleven trillion, one hundred eleven billion, one hundred one million, one hundred one thousand, ten".