111112121011012 has 24 divisors (see below), whose sum is σ = 215289157134240. Its totient is φ = 49751695973760.

The previous prime is 111112121010983. The next prime is 111112121011013. The reversal of 111112121011012 is 210110121211111.

It is not an unprimeable number, because it can be changed into a prime (111112121011013) by changing a digit.

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, 18845336437 + ... + 18845342332.

It is an arithmetic number, because the mean of its divisors is an integer number (8970381547260).

Almost surely, 2^{111112121011012} is an apocalyptic number.

It is an amenable number.

111112121011012 is a deficient number, since it is larger than the sum of its proper divisors (104177036123228).

111112121011012 is a wasteful number, since it uses less digits than its factorization.

111112121011012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37690678851 (or 37690678849 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 16.

Adding to 111112121011012 its reverse (210110121211111), we get a palindrome (321222242222123).

The spelling of 111112121011012 in words is "one hundred eleven trillion, one hundred twelve billion, one hundred twenty-one million, eleven thousand, twelve".