2106720071 has 2 divisors, whose sum is σ = 2106720072. Its totient is φ = 2106720070.

The previous prime is 2106720047. The next prime is 2106720127. The reversal of 2106720071 is 1700276012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2106720071 - 2¹⁰ = 2106719047 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2106720071.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2106720271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1053360035 + 1053360036.

It is an arithmetic number, because the mean of its divisors is an integer number (1053360036).

Almost surely, 2^2106720071 is an apocalyptic number.

2106720071 is a deficient number, since it is larger than the sum of its proper divisors (1).

2106720071 is an equidigital number, since it uses as much as digits as its factorization.

2106720071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1176, while the sum is 26.

The square root of 2106720071 is about 45899.0203708097. The cubic root of 2106720071 is about 1281.9436760683.

Adding to 2106720071 its reverse (1700276012), we get a palindrome (3806996083).

The spelling of 2106720071 in words is "two billion, one hundred six million, seven hundred twenty thousand, seventy-one".