111200012000121 has 32 divisors (see below), whose sum is σ = 166159236612096. Its totient is φ = 65555804952000.

The previous prime is 111200012000107. The next prime is 111200012000149. The reversal of 111200012000121 is 121000210002111.

It is not a de Polignac number, because 111200012000121 - 2³⁰ = 111198938258297 is a prime.

It is a super-3 number, since 3×111200012000121³ (a number of 43 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111200012000097 and 111200012000106.

It is not an unprimeable number, because it can be changed into a prime (111200012000191) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6784185 + ... + 16383686.

It is an arithmetic number, because the mean of its divisors is an integer number (5192476144128).

Almost surely, 2^{111200012000121} is an apocalyptic number.

111200012000121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111200012000121 is a deficient number, since it is larger than the sum of its proper divisors (54959224611975).

111200012000121 is a wasteful number, since it uses less digits than its factorization.

111200012000121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23171853.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 111200012000121 its reverse (121000210002111), we get a palindrome (232200222002232).

The spelling of 111200012000121 in words is "one hundred eleven trillion, two hundred billion, twelve million, one hundred twenty-one", and thus it is an aban number.