112221211121121 has 4 divisors (see below), whose sum is σ = 149628281494832. Its totient is φ = 74814140747412.

The previous prime is 112221211121093. The next prime is 112221211121183. The reversal of 112221211121121 is 121121112122211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 112221211121121 - 2⁶ = 112221211121057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (112221211121191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18703535186851 + ... + 18703535186856.

It is an arithmetic number, because the mean of its divisors is an integer number (37407070373708).

Almost surely, 2^{112221211121121} is an apocalyptic number.

It is an amenable number.

112221211121121 is a deficient number, since it is larger than the sum of its proper divisors (37407070373711).

112221211121121 is an equidigital number, since it uses as much as digits as its factorization.

112221211121121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37407070373710.

The product of its digits is 64, while the sum is 21.

Adding to 112221211121121 its reverse (121121112122211), we get a palindrome (233342323243332).

The spelling of 112221211121121 in words is "one hundred twelve trillion, two hundred twenty-one billion, two hundred eleven million, one hundred twenty-one thousand, one hundred twenty-one".