102111071 has 2 divisors, whose sum is σ = 102111072. Its totient is φ = 102111070.

The previous prime is 102111049. The next prime is 102111103. The reversal of 102111071 is 170111201.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102111071 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102111671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51055535 + 51055536.

It is an arithmetic number, because the mean of its divisors is an integer number (51055536).

Almost surely, 2^102111071 is an apocalyptic number.

102111071 is a deficient number, since it is larger than the sum of its proper divisors (1).

102111071 is an equidigital number, since it uses as much as digits as its factorization.

102111071 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 14.

The square root of 102111071 is about 10105.0022761007. The cubic root of 102111071 is about 467.4024061582.

Adding to 102111071 its reverse (170111201), we get a palindrome (272222272).

The spelling of 102111071 in words is "one hundred two million, one hundred eleven thousand, seventy-one".