210013102109 has 2 divisors, whose sum is σ = 210013102110. Its totient is φ = 210013102108.

The previous prime is 210013102099. The next prime is 210013102139. The reversal of 210013102109 is 901201310012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 181139616025 + 28873486084 = 425605^2 + 169922^2 .

It is a cyclic number.

It is not a de Polignac number, because 210013102109 - 2⁴ = 210013102093 is a prime.

It is a super-3 number, since 3×210013102109³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210013102139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105006551054 + 105006551055.

It is an arithmetic number, because the mean of its divisors is an integer number (105006551055).

Almost surely, 2^210013102109 is an apocalyptic number.

It is an amenable number.

210013102109 is a deficient number, since it is larger than the sum of its proper divisors (1).

210013102109 is an equidigital number, since it uses as much as digits as its factorization.

210013102109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 20.

The spelling of 210013102109 in words is "two hundred ten billion, thirteen million, one hundred two thousand, one hundred nine".