6106172221 has 2 divisors, whose sum is σ = 6106172222. Its totient is φ = 6106172220.

The previous prime is 6106172147. The next prime is 6106172231. The reversal of 6106172221 is 1222716016.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5024683225 + 1081488996 = 70885^2 + 32886^2 .

It is a cyclic number.

It is not a de Polignac number, because 6106172221 - 2¹¹ = 6106170173 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6106172221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6106172231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3053086110 + 3053086111.

It is an arithmetic number, because the mean of its divisors is an integer number (3053086111).

Almost surely, 2^6106172221 is an apocalyptic number.

It is an amenable number.

6106172221 is a deficient number, since it is larger than the sum of its proper divisors (1).

6106172221 is an equidigital number, since it uses as much as digits as its factorization.

6106172221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 6106172221 is about 78142.0003647206. Note that the first 3 decimals coincide. The cubic root of 6106172221 is about 1827.7761933982.

Adding to 6106172221 its reverse (1222716016), we get a palindrome (7328888237).

The spelling of 6106172221 in words is "six billion, one hundred six million, one hundred seventy-two thousand, two hundred twenty-one".