10101000209 has 4 divisors (see below), whose sum is σ = 10101304320. Its totient is φ = 10100696100.

The previous prime is 10101000149. The next prime is 10101000241. The reversal of 10101000209 is 90200010101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 90200010101 = 265883 ⋅339247.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10101000209 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 10101000193 and 10101000202.

It is not an unprimeable number, because it can be changed into a prime (10101000509) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95129 + ... + 171030.

It is an arithmetic number, because the mean of its divisors is an integer number (2525326080).

Almost surely, 2^10101000209 is an apocalyptic number.

It is an amenable number.

10101000209 is a deficient number, since it is larger than the sum of its proper divisors (304111).

10101000209 is an equidigital number, since it uses as much as digits as its factorization.

10101000209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304110.

The product of its (nonzero) digits is 18, while the sum is 14.

The spelling of 10101000209 in words is "ten billion, one hundred one million, two hundred nine", and thus it is an aban number.