111001121102121 has 32 divisors (see below), whose sum is σ = 150068407104000. Its totient is φ = 72971803352448.

The previous prime is 111001121102071. The next prime is 111001121102143. The reversal of 111001121102121 is 121201121100111.

It is not a de Polignac number, because 111001121102121 - 2²¹ = 111001119004969 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111001121102121.

It is not an unprimeable number, because it can be changed into a prime (111001121102191) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 3138887986 + ... + 3138923348.

It is an arithmetic number, because the mean of its divisors is an integer number (4689637722000).

Almost surely, 2^{111001121102121} is an apocalyptic number.

It is an amenable number.

111001121102121 is a deficient number, since it is larger than the sum of its proper divisors (39067286001879).

111001121102121 is a wasteful number, since it uses less digits than its factorization.

111001121102121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66853.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 111001121102121 its reverse (121201121100111), we get a palindrome (232202242202232).

The spelling of 111001121102121 in words is "one hundred eleven trillion, one billion, one hundred twenty-one million, one hundred two thousand, one hundred twenty-one".