22122220022171 has 2 divisors, whose sum is σ = 22122220022172. Its totient is φ = 22122220022170.

The previous prime is 22122220022113. The next prime is 22122220022173. The reversal of 22122220022171 is 17122002222122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22122220022171 - 2²⁶ = 22122152913307 is a prime.

Together with 22122220022173, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22122220022171.

It is not a weakly prime, because it can be changed into another prime (22122220022173) 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, 11061110011085 + 11061110011086.

It is an arithmetic number, because the mean of its divisors is an integer number (11061110011086).

Almost surely, 2^{22122220022171} is an apocalyptic number.

22122220022171 is a deficient number, since it is larger than the sum of its proper divisors (1).

22122220022171 is an equidigital number, since it uses as much as digits as its factorization.

22122220022171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1792, while the sum is 26.

Adding to 22122220022171 its reverse (17122002222122), we get a palindrome (39244222244293).

The spelling of 22122220022171 in words is "twenty-two trillion, one hundred twenty-two billion, two hundred twenty million, twenty-two thousand, one hundred seventy-one".