22221110121271 has 2 divisors, whose sum is σ = 22221110121272. Its totient is φ = 22221110121270.

The previous prime is 22221110121211. The next prime is 22221110121319. The reversal of 22221110121271 is 17212101112222.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22221110121271 - 2¹⁷ = 22221109990199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22221110121211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11110555060635 + 11110555060636.

It is an arithmetic number, because the mean of its divisors is an integer number (11110555060636).

Almost surely, 2^{22221110121271} is an apocalyptic number.

22221110121271 is a deficient number, since it is larger than the sum of its proper divisors (1).

22221110121271 is an equidigital number, since it uses as much as digits as its factorization.

22221110121271 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 448, while the sum is 25.

Adding to 22221110121271 its reverse (17212101112222), we get a palindrome (39433211233493).

The spelling of 22221110121271 in words is "twenty-two trillion, two hundred twenty-one billion, one hundred ten million, one hundred twenty-one thousand, two hundred seventy-one".