210101200109 has 8 divisors (see below), whose sum is σ = 213645542328. Its totient is φ = 206560085760.

The previous prime is 210101200097. The next prime is 210101200117. The reversal of 210101200109 is 901002101012.

210101200109 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 44759749225 + 165341450884 = 211565^2 + 406622^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 210101200109 - 2⁴ = 210101200093 is a prime.

It is a super-2 number, since 2×210101200109² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210107200109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 675512 + ... + 936225.

It is an arithmetic number, because the mean of its divisors is an integer number (26705692791).

Almost surely, 2^210101200109 is an apocalyptic number.

It is an amenable number.

210101200109 is a deficient number, since it is larger than the sum of its proper divisors (3544342219).

210101200109 is a wasteful number, since it uses less digits than its factorization.

210101200109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1613935.

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

The spelling of 210101200109 in words is "two hundred ten billion, one hundred one million, two hundred thousand, one hundred nine".