111200000120121 has 16 divisors (see below), whose sum is σ = 165690465812928. Its totient is φ = 65750184844800.

The previous prime is 111200000120117. The next prime is 111200000120141. The reversal of 111200000120121 is 121021000002111.

It is not a de Polignac number, because 111200000120121 - 2² = 111200000120117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111200000120097 and 111200000120106.

It is not an unprimeable number, because it can be changed into a prime (111200000120141) 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 15 ways as a sum of consecutive naturals, for example, 41093864176 + ... + 41093866881.

It is an arithmetic number, because the mean of its divisors is an integer number (10355654113308).

Almost surely, 2^{111200000120121} is an apocalyptic number.

111200000120121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111200000120121 is a deficient number, since it is larger than the sum of its proper divisors (54490465692807).

111200000120121 is a wasteful number, since it uses less digits than its factorization.

111200000120121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82187731112.

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

Adding to 111200000120121 its reverse (121021000002111), we get a palindrome (232221000122232).

The spelling of 111200000120121 in words is "one hundred eleven trillion, two hundred billion, one hundred twenty thousand, one hundred twenty-one".