111121012120012 has 12 divisors (see below), whose sum is σ = 202916630828016. Its totient is φ = 53144831883440.

The previous prime is 111121012119983. The next prime is 111121012120021. The reversal of 111121012120012 is 210021210121111.

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, 603918544039 + ... + 603918544222.

It is an arithmetic number, because the mean of its divisors is an integer number (16909719235668).

Almost surely, 2^{111121012120012} is an apocalyptic number.

It is an amenable number.

111121012120012 is a deficient number, since it is larger than the sum of its proper divisors (91795618708004).

111121012120012 is a wasteful number, since it uses less digits than its factorization.

111121012120012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1207837088288 (or 1207837088286 counting only the distinct ones).

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

Adding to 111121012120012 its reverse (210021210121111), we get a palindrome (321142222241123).

The spelling of 111121012120012 in words is "one hundred eleven trillion, one hundred twenty-one billion, twelve million, one hundred twenty thousand, twelve".