210001102109 has 2 divisors, whose sum is σ = 210001102110. Its totient is φ = 210001102108.

The previous prime is 210001102099. The next prime is 210001102111. The reversal of 210001102109 is 901201100012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 172598702500 + 37402399609 = 415450^2 + 193397^2 .

It is a cyclic number.

It is not a de Polignac number, because 210001102109 - 2⁸ = 210001101853 is a prime.

Together with 210001102111, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210001102189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105000551054 + 105000551055.

It is an arithmetic number, because the mean of its divisors is an integer number (105000551055).

Almost surely, 2^210001102109 is an apocalyptic number.

It is an amenable number.

210001102109 is a deficient number, since it is larger than the sum of its proper divisors (1).

210001102109 is an equidigital number, since it uses as much as digits as its factorization.

210001102109 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 210001102109 in words is "two hundred ten billion, one million, one hundred two thousand, one hundred nine".