111011122020012 has 96 divisors (see below), whose sum is σ = 273050687508480. Its totient is φ = 35053801413120.

The previous prime is 111011122019911. The next prime is 111011122020047. The reversal of 111011122020012 is 210020221110111.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 111011122019973 and 111011122020000.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6587178 + ... + 16291505.

It is an arithmetic number, because the mean of its divisors is an integer number (2844277994880).

Almost surely, 2^{111011122020012} is an apocalyptic number.

111011122020012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111011122020012 is an abundant number, since it is smaller than the sum of its proper divisors (162039565488468).

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

111011122020012 is a wasteful number, since it uses less digits than its factorization.

111011122020012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22878983 (or 22878981 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 111011122020012 its reverse (210020221110111), we get a palindrome (321031343130123).

Subtracting 111011122020012 from its reverse (210020221110111), we obtain a palindrome (99009099090099).

The spelling of 111011122020012 in words is "one hundred eleven trillion, eleven billion, one hundred twenty-two million, twenty thousand, twelve".