222001121222117 has 2 divisors, whose sum is σ = 222001121222118. Its totient is φ = 222001121222116.

The previous prime is 222001121221993. The next prime is 222001121222141. The reversal of 222001121222117 is 711222121100222.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 189935640777796 + 32065480444321 = 13781714^2 + 5662639^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222001121222117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222001121222317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111000560611058 + 111000560611059.

It is an arithmetic number, because the mean of its divisors is an integer number (111000560611059).

Almost surely, 2^{222001121222117} is an apocalyptic number.

It is an amenable number.

222001121222117 is a deficient number, since it is larger than the sum of its proper divisors (1).

222001121222117 is an equidigital number, since it uses as much as digits as its factorization.

222001121222117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 896, while the sum is 26.

Adding to 222001121222117 its reverse (711222121100222), we get a palindrome (933223242322339).

The spelling of 222001121222117 in words is "two hundred twenty-two trillion, one billion, one hundred twenty-one million, two hundred twenty-two thousand, one hundred seventeen".