102011100209 has 2 divisors, whose sum is σ = 102011100210. Its totient is φ = 102011100208.

The previous prime is 102011100199. The next prime is 102011100211. The reversal of 102011100209 is 902001110201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58296653809 + 43714446400 = 241447^2 + 209080^2 .

It is a cyclic number.

It is not a de Polignac number, because 102011100209 - 2²⁴ = 101994322993 is a prime.

Together with 102011100211, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (102011100299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51005550104 + 51005550105.

It is an arithmetic number, because the mean of its divisors is an integer number (51005550105).

Almost surely, 2^102011100209 is an apocalyptic number.

It is an amenable number.

102011100209 is a deficient number, since it is larger than the sum of its proper divisors (1).

102011100209 is an equidigital number, since it uses as much as digits as its factorization.

102011100209 is an evil number, because the sum of its binary digits is even.

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

The spelling of 102011100209 in words is "one hundred two billion, eleven million, one hundred thousand, two hundred nine".