2201220121171 has 2 divisors, whose sum is σ = 2201220121172. Its totient is φ = 2201220121170.

The previous prime is 2201220121099. The next prime is 2201220121207. The reversal of 2201220121171 is 1711210221022.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2201220121171 is a prime.

It is a super-2 number, since 2×2201220121171² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2201220121871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1100610060585 + 1100610060586.

It is an arithmetic number, because the mean of its divisors is an integer number (1100610060586).

Almost surely, 2^{2201220121171} is an apocalyptic number.

2201220121171 is a deficient number, since it is larger than the sum of its proper divisors (1).

2201220121171 is an equidigital number, since it uses as much as digits as its factorization.

2201220121171 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 224, while the sum is 22.

Adding to 2201220121171 its reverse (1711210221022), we get a palindrome (3912430342193).

The spelling of 2201220121171 in words is "two trillion, two hundred one billion, two hundred twenty million, one hundred twenty-one thousand, one hundred seventy-one".