220000121171 has 2 divisors, whose sum is σ = 220000121172. Its totient is φ = 220000121170.

The previous prime is 220000121147. The next prime is 220000121189. The reversal of 220000121171 is 171121000022.

220000121171 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 a de Polignac number, because none of the positive numbers 2^k-220000121171 is a prime.

It is a super-2 number, since 2×220000121171² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (220000121191) 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, 110000060585 + 110000060586.

It is an arithmetic number, because the mean of its divisors is an integer number (110000060586).

Almost surely, 2^220000121171 is an apocalyptic number.

220000121171 is a deficient number, since it is larger than the sum of its proper divisors (1).

220000121171 is an equidigital number, since it uses as much as digits as its factorization.

220000121171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56, while the sum is 17.

Adding to 220000121171 its reverse (171121000022), we get a palindrome (391121121193).

The spelling of 220000121171 in words is "two hundred twenty billion, one hundred twenty-one thousand, one hundred seventy-one".