111121012012 has 24 divisors (see below), whose sum is σ = 197187590432. Its totient is φ = 54782179200.

The previous prime is 111121011979. The next prime is 111121012021. The reversal of 111121012012 is 210210121111.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 111121011983 and 111121012001.

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 7 ways as a sum of consecutive naturals, for example, 896962 + ... + 1013302.

Almost surely, 2^111121012012 is an apocalyptic number.

It is an amenable number.

111121012012 is a deficient number, since it is larger than the sum of its proper divisors (86066578420).

111121012012 is a wasteful number, since it uses less digits than its factorization.

111121012012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119689 (or 119687 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 111121012012 its reverse (210210121111), we get a palindrome (321331133123).

The spelling of 111121012012 in words is "one hundred eleven billion, one hundred twenty-one million, twelve thousand, twelve".