111220012 has 12 divisors (see below), whose sum is σ = 195494040. Its totient is φ = 55364576.

The previous prime is 111219991. The next prime is 111220037. The reversal of 111220012 is 210022111.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60337 + ... + 62152.

It is an arithmetic number, because the mean of its divisors is an integer number (16291170).

Almost surely, 2^111220012 is an apocalyptic number.

It is an amenable number.

111220012 is a deficient number, since it is larger than the sum of its proper divisors (84274028).

111220012 is a wasteful number, since it uses less digits than its factorization.

111220012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122720 (or 122718 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 111220012 is about 10546.0898915190. The cubic root of 111220012 is about 480.9068677446.

Adding to 111220012 its reverse (210022111), we get a palindrome (321242123).

The spelling of 111220012 in words is "one hundred eleven million, two hundred twenty thousand, twelve".