112122011220221 has 4 divisors (see below), whose sum is σ = 112137555662652. Its totient is φ = 112106466777792.

The previous prime is 112122011220199. The next prime is 112122011220259. The reversal of 112122011220221 is 122022110221211.

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 54084110556100 + 58037900664121 = 7354190^2 + 7618261^2 .

It is a cyclic number.

It is not a de Polignac number, because 112122011220221 - 2³⁸ = 111847133313277 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 112122011220193 and 112122011220202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112122011226221) 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, 7772210396 + ... + 7772224821.

It is an arithmetic number, because the mean of its divisors is an integer number (28034388915663).

Almost surely, 2^{112122011220221} is an apocalyptic number.

It is an amenable number.

112122011220221 is a deficient number, since it is larger than the sum of its proper divisors (15544442431).

112122011220221 is an equidigital number, since it uses as much as digits as its factorization.

112122011220221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15544442430.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 112122011220221 its reverse (122022110221211), we get a palindrome (234144121441432).

The spelling of 112122011220221 in words is "one hundred twelve trillion, one hundred twenty-two billion, eleven million, two hundred twenty thousand, two hundred twenty-one".