112220110122221 has 2 divisors, whose sum is σ = 112220110122222. Its totient is φ = 112220110122220.

The previous prime is 112220110122149. The next prime is 112220110122223. The reversal of 112220110122221 is 122221011022211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58813392282121 + 53406717840100 = 7668989^2 + 7307990^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-112220110122221 is a prime.

Together with 112220110122223, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 112220110122193 and 112220110122202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (112220110122223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56110055061110 + 56110055061111.

It is an arithmetic number, because the mean of its divisors is an integer number (56110055061111).

Almost surely, 2^{112220110122221} is an apocalyptic number.

It is an amenable number.

112220110122221 is a deficient number, since it is larger than the sum of its proper divisors (1).

112220110122221 is an equidigital number, since it uses as much as digits as its factorization.

112220110122221 is an evil number, because the sum of its binary digits is even.

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

Adding to 112220110122221 its reverse (122221011022211), we get a palindrome (234441121144432).

The spelling of 112220110122221 in words is "one hundred twelve trillion, two hundred twenty billion, one hundred ten million, one hundred twenty-two thousand, two hundred twenty-one".