112112220102221 has 4 divisors (see below), whose sum is σ = 112123753104444. Its totient is φ = 112100687100000.

The previous prime is 112112220102209. The next prime is 112112220102331. The reversal of 112112220102221 is 122201022211211.

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 16639505514025 + 95472714588196 = 4079155^2 + 9771014^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-112112220102221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 112112220102193 and 112112220102202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112112220102521) 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, 5766486530 + ... + 5766505971.

It is an arithmetic number, because the mean of its divisors is an integer number (28030938276111).

Almost surely, 2^{112112220102221} is an apocalyptic number.

It is an amenable number.

112112220102221 is a deficient number, since it is larger than the sum of its proper divisors (11533002223).

112112220102221 is an equidigital number, since it uses as much as digits as its factorization.

112112220102221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11533002222.

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

Adding to 112112220102221 its reverse (122201022211211), we get a palindrome (234313242313432).

The spelling of 112112220102221 in words is "one hundred twelve trillion, one hundred twelve billion, two hundred twenty million, one hundred two thousand, two hundred twenty-one".