220222202171 has 2 divisors, whose sum is σ = 220222202172. Its totient is φ = 220222202170.

The previous prime is 220222202003. The next prime is 220222202173. The reversal of 220222202171 is 171202222022.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 220222202171 - 2¹⁸ = 220221940027 is a prime.

It is a super-2 number, since 2×220222202171² (a number of 23 digits) contains 22 as substring.

Together with 220222202173, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (220222202173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110111101085 + 110111101086.

It is an arithmetic number, because the mean of its divisors is an integer number (110111101086).

Almost surely, 2^220222202171 is an apocalyptic number.

220222202171 is a deficient number, since it is larger than the sum of its proper divisors (1).

220222202171 is an equidigital number, since it uses as much as digits as its factorization.

220222202171 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 896, while the sum is 23.

Adding to 220222202171 its reverse (171202222022), we get a palindrome (391424424193).

The spelling of 220222202171 in words is "two hundred twenty billion, two hundred twenty-two million, two hundred two thousand, one hundred seventy-one".