111111210220012 has 12 divisors (see below), whose sum is σ = 195928927946136. Its totient is φ = 55131516521120.

The previous prime is 111111210219937. The next prime is 111111210220079. The reversal of 111111210220012 is 210022012111111.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106022146633 + ... + 106022147680.

It is an arithmetic number, because the mean of its divisors is an integer number (16327410662178).

Almost surely, 2^{111111210220012} is an apocalyptic number.

It is an amenable number.

111111210220012 is a deficient number, since it is larger than the sum of its proper divisors (84817717726124).

111111210220012 is a wasteful number, since it uses less digits than its factorization.

111111210220012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212044294448 (or 212044294446 counting only the distinct ones).

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

Adding to 111111210220012 its reverse (210022012111111), we get a palindrome (321133222331123).

The spelling of 111111210220012 in words is "one hundred eleven trillion, one hundred eleven billion, two hundred ten million, two hundred twenty thousand, twelve".