2211222202171 has 2 divisors, whose sum is σ = 2211222202172. Its totient is φ = 2211222202170.

The previous prime is 2211222202087. The next prime is 2211222202201. The reversal of 2211222202171 is 1712022221122.

2211222202171 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2211222202171 - 2¹¹ = 2211222200123 is a prime.

It is a super-2 number, since 2×2211222202171² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2211222202571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1105611101085 + 1105611101086.

It is an arithmetic number, because the mean of its divisors is an integer number (1105611101086).

Almost surely, 2^{2211222202171} is an apocalyptic number.

2211222202171 is a deficient number, since it is larger than the sum of its proper divisors (1).

2211222202171 is an equidigital number, since it uses as much as digits as its factorization.

2211222202171 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 25.

Adding to 2211222202171 its reverse (1712022221122), we get a palindrome (3923244423293).

The spelling of 2211222202171 in words is "two trillion, two hundred eleven billion, two hundred twenty-two million, two hundred two thousand, one hundred seventy-one".