2306166221 has 2 divisors, whose sum is σ = 2306166222. Its totient is φ = 2306166220.

The previous prime is 2306166193. The next prime is 2306166253. The reversal of 2306166221 is 1226616032.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1402502500 + 903663721 = 37450^2 + 30061^2 .

It is a cyclic number.

It is not a de Polignac number, because 2306166221 - 2²⁶ = 2239057357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2306165221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1153083110 + 1153083111.

It is an arithmetic number, because the mean of its divisors is an integer number (1153083111).

Almost surely, 2^2306166221 is an apocalyptic number.

It is an amenable number.

2306166221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2306166221 is an equidigital number, since it uses as much as digits as its factorization.

2306166221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 2306166221 is about 48022.5595007180. The cubic root of 2306166221 is about 1321.1846995381.

The spelling of 2306166221 in words is "two billion, three hundred six million, one hundred sixty-six thousand, two hundred twenty-one".