112110121221221 has 4 divisors (see below), whose sum is σ = 118704834234252. Its totient is φ = 105515408208192.

The previous prime is 112110121221193. The next prime is 112110121221253. The reversal of 112110121221221 is 122122121011211.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 89823271620196 + 22286849601025 = 9477514^2 + 4720895^2 .

It is a cyclic number.

It is not a de Polignac number, because 112110121221221 - 2²² = 112110117026917 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 112110121221193 and 112110121221202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112110121220221) 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, 3297356506490 + ... + 3297356506523.

It is an arithmetic number, because the mean of its divisors is an integer number (29676208558563).

Almost surely, 2^{112110121221221} is an apocalyptic number.

It is an amenable number.

112110121221221 is a deficient number, since it is larger than the sum of its proper divisors (6594713013031).

112110121221221 is an equidigital number, since it uses as much as digits as its factorization.

112110121221221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6594713013030.

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 112110121221221 its reverse (122122121011211), we get a palindrome (234232242232432).

The spelling of 112110121221221 in words is "one hundred twelve trillion, one hundred ten billion, one hundred twenty-one million, two hundred twenty-one thousand, two hundred twenty-one".