112111101112121 has 24 divisors (see below), whose sum is σ = 127619703120000. Its totient is φ = 98089472571552.

The previous prime is 112111101112111. The next prime is 112111101112151. The reversal of 112111101112121 is 121211101111211.

It is a happy number.

It is not a de Polignac number, because 112111101112121 - 2³⁴ = 112093921242937 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 112111101112121.

It is not an unprimeable number, because it can be changed into a prime (112111101112111) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 192022721 + ... + 192605678.

It is an arithmetic number, because the mean of its divisors is an integer number (5317487630000).

Almost surely, 2^{112111101112121} is an apocalyptic number.

It is an amenable number.

112111101112121 is a deficient number, since it is larger than the sum of its proper divisors (15508602007879).

112111101112121 is a wasteful number, since it uses less digits than its factorization.

112111101112121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384628493 (or 384628470 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 17.

Adding to 112111101112121 its reverse (121211101111211), we get a palindrome (233322202223332).

The spelling of 112111101112121 in words is "one hundred twelve trillion, one hundred eleven billion, one hundred one million, one hundred twelve thousand, one hundred twenty-one".