102091108213 has 2 divisors, whose sum is σ = 102091108214. Its totient is φ = 102091108212.

The previous prime is 102091108201. The next prime is 102091108277. The reversal of 102091108213 is 312801190201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82760933124 + 19330175089 = 287682^2 + 139033^2 .

It is an emirp because it is prime and its reverse (312801190201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 102091108213 - 2¹⁷ = 102090977141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102091108913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51045554106 + 51045554107.

It is an arithmetic number, because the mean of its divisors is an integer number (51045554107).

Almost surely, 2^102091108213 is an apocalyptic number.

It is an amenable number.

102091108213 is a deficient number, since it is larger than the sum of its proper divisors (1).

102091108213 is an equidigital number, since it uses as much as digits as its factorization.

102091108213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 28.

Adding to 102091108213 its reverse (312801190201), we get a palindrome (414892298414).

The spelling of 102091108213 in words is "one hundred two billion, ninety-one million, one hundred eight thousand, two hundred thirteen".