2100071 has 2 divisors, whose sum is σ = 2100072. Its totient is φ = 2100070.

The previous prime is 2100053. The next prime is 2100079. The reversal of 2100071 is 1700012.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2100071 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2100079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050035 + 1050036.

It is an arithmetic number, because the mean of its divisors is an integer number (1050036).

2^2100071 is an apocalyptic number.

2100071 is a deficient number, since it is larger than the sum of its proper divisors (1).

2100071 is an equidigital number, since it uses as much as digits as its factorization.

2100071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14, while the sum is 11.

The square root of 2100071 is about 1449.1621717392. The cubic root of 2100071 is about 128.0593596749.

Adding to 2100071 its reverse (1700012), we get a palindrome (3800083).

The spelling of 2100071 in words is "two million, one hundred thousand, seventy-one".