2106441217 has 2 divisors, whose sum is σ = 2106441218. Its totient is φ = 2106441216.

The previous prime is 2106441199. The next prime is 2106441229. The reversal of 2106441217 is 7121446012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1075774401 + 1030666816 = 32799^2 + 32104^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2106441217 is a prime.

It is not a weakly prime, because it can be changed into another prime (2106441247) 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, 1053220608 + 1053220609.

It is an arithmetic number, because the mean of its divisors is an integer number (1053220609).

Almost surely, 2^2106441217 is an apocalyptic number.

It is an amenable number.

2106441217 is a deficient number, since it is larger than the sum of its proper divisors (1).

2106441217 is an equidigital number, since it uses as much as digits as its factorization.

2106441217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 2106441217 is about 45895.9825801780. The cubic root of 2106441217 is about 1281.8871124871.

Adding to 2106441217 its reverse (7121446012), we get a palindrome (9227887229).

The spelling of 2106441217 in words is "two billion, one hundred six million, four hundred forty-one thousand, two hundred seventeen".