222221222201171 has 2 divisors, whose sum is σ = 222221222201172. Its totient is φ = 222221222201170.

The previous prime is 222221222201117. The next prime is 222221222201339. The reversal of 222221222201171 is 171102222122222.

Together with previous prime (222221222201117) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 222221222201171 - 2⁶ = 222221222201107 is a prime.

It is not a weakly prime, because it can be changed into another prime (222221222201971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111110611100585 + 111110611100586.

It is an arithmetic number, because the mean of its divisors is an integer number (111110611100586).

Almost surely, 2^{222221222201171} is an apocalyptic number.

222221222201171 is a deficient number, since it is larger than the sum of its proper divisors (1).

222221222201171 is an equidigital number, since it uses as much as digits as its factorization.

222221222201171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3584, while the sum is 29.

Adding to 222221222201171 its reverse (171102222122222), we get a palindrome (393323444323393).

The spelling of 222221222201171 in words is "two hundred twenty-two trillion, two hundred twenty-one billion, two hundred twenty-two million, two hundred one thousand, one hundred seventy-one".