102210447991 has 2 divisors, whose sum is σ = 102210447992. Its totient is φ = 102210447990.

The previous prime is 102210447971. The next prime is 102210448013. The reversal of 102210447991 is 199744012201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102210447991 - 2¹¹ = 102210445943 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102210447971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51105223995 + 51105223996.

It is an arithmetic number, because the mean of its divisors is an integer number (51105223996).

Almost surely, 2^102210447991 is an apocalyptic number.

102210447991 is a deficient number, since it is larger than the sum of its proper divisors (1).

102210447991 is an equidigital number, since it uses as much as digits as its factorization.

102210447991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 40.

The spelling of 102210447991 in words is "one hundred two billion, two hundred ten million, four hundred forty-seven thousand, nine hundred ninety-one".