121222110111217 has 2 divisors, whose sum is σ = 121222110111218. Its totient is φ = 121222110111216.

The previous prime is 121222110111187. The next prime is 121222110111301. The reversal of 121222110111217 is 712111011222121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 116195550595216 + 5026559516001 = 10779404^2 + 2241999^2 .

It is a cyclic number.

It is not a de Polignac number, because 121222110111217 - 2¹¹ = 121222110109169 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121222110111191 and 121222110111200.

It is not a weakly prime, because it can be changed into another prime (121222110711217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60611055055608 + 60611055055609.

It is an arithmetic number, because the mean of its divisors is an integer number (60611055055609).

Almost surely, 2^{121222110111217} is an apocalyptic number.

It is an amenable number.

121222110111217 is a deficient number, since it is larger than the sum of its proper divisors (1).

121222110111217 is an equidigital number, since it uses as much as digits as its factorization.

121222110111217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 224, while the sum is 25.

Adding to 121222110111217 its reverse (712111011222121), we get a palindrome (833333121333338).

The spelling of 121222110111217 in words is "one hundred twenty-one trillion, two hundred twenty-two billion, one hundred ten million, one hundred eleven thousand, two hundred seventeen".