22204421021171 has 2 divisors, whose sum is σ = 22204421021172. Its totient is φ = 22204421021170.

The previous prime is 22204421021161. The next prime is 22204421021203. The reversal of 22204421021171 is 17112012440222.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22204421021171 is a prime.

It is a super-2 number, since 2×22204421021171² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22204421021161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11102210510585 + 11102210510586.

It is an arithmetic number, because the mean of its divisors is an integer number (11102210510586).

Almost surely, 2^{22204421021171} is an apocalyptic number.

22204421021171 is a deficient number, since it is larger than the sum of its proper divisors (1).

22204421021171 is an equidigital number, since it uses as much as digits as its factorization.

22204421021171 is an evil number, because the sum of its binary digits is even.

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

Adding to 22204421021171 its reverse (17112012440222), we get a palindrome (39316433461393).

The spelling of 22204421021171 in words is "twenty-two trillion, two hundred four billion, four hundred twenty-one million, twenty-one thousand, one hundred seventy-one".