102110001209 has 2 divisors, whose sum is σ = 102110001210. Its totient is φ = 102110001208.

The previous prime is 102110001173. The next prime is 102110001247. The reversal of 102110001209 is 902100011201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75493057600 + 26616943609 = 274760^2 + 163147^2 .

It is an emirp because it is prime and its reverse (902100011201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 102110001209 - 2¹² = 102109997113 is a prime.

It is not a weakly prime, because it can be changed into another prime (102110001269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51055000604 + 51055000605.

It is an arithmetic number, because the mean of its divisors is an integer number (51055000605).

Almost surely, 2^102110001209 is an apocalyptic number.

It is an amenable number.

102110001209 is a deficient number, since it is larger than the sum of its proper divisors (1).

102110001209 is an equidigital number, since it uses as much as digits as its factorization.

102110001209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 17.

The spelling of 102110001209 in words is "one hundred two billion, one hundred ten million, one thousand, two hundred nine".