102210211009 has 2 divisors, whose sum is σ = 102210211010. Its totient is φ = 102210211008.

The previous prime is 102210211007. The next prime is 102210211031. The reversal of 102210211009 is 900112012201.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101872680625 + 337530384 = 319175^2 + 18372^2 .

It is a cyclic number.

It is not a de Polignac number, because 102210211009 - 2¹ = 102210211007 is a prime.

Together with 102210211007, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (102210211007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51105105504 + 51105105505.

It is an arithmetic number, because the mean of its divisors is an integer number (51105105505).

Almost surely, 2^102210211009 is an apocalyptic number.

It is an amenable number.

102210211009 is a deficient number, since it is larger than the sum of its proper divisors (1).

102210211009 is an equidigital number, since it uses as much as digits as its factorization.

102210211009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 19.

The spelling of 102210211009 in words is "one hundred two billion, two hundred ten million, two hundred eleven thousand, nine".