111220111012 has 12 divisors (see below), whose sum is σ = 195410635056. Its totient is φ = 55388501000.

The previous prime is 111220111003. The next prime is 111220111031. The reversal of 111220111012 is 210111022111.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 111220110983 and 111220111001.

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 3 ways as a sum of consecutive naturals, for example, 55387498 + ... + 55389505.

It is an arithmetic number, because the mean of its divisors is an integer number (16284219588).

Almost surely, 2^111220111012 is an apocalyptic number.

It is an amenable number.

111220111012 is a deficient number, since it is larger than the sum of its proper divisors (84190524044).

111220111012 is a wasteful number, since it uses less digits than its factorization.

111220111012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110777258 (or 110777256 counting only the distinct ones).

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

Adding to 111220111012 its reverse (210111022111), we get a palindrome (321331133123).

The spelling of 111220111012 in words is "one hundred eleven billion, two hundred twenty million, one hundred eleven thousand, twelve".