210020120102209 has 4 divisors (see below), whose sum is σ = 210327616618416. Its totient is φ = 209712623586004.

The previous prime is 210020120102197. The next prime is 210020120102297. The reversal of 210020120102209 is 902201021020012.

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.

It is a cyclic number.

It is not a de Polignac number, because 210020120102209 - 2¹⁹ = 210020119577921 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 210020120102209.

It is not an unprimeable number, because it can be changed into a prime (210020120102909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153748257079 + ... + 153748258444.

It is an arithmetic number, because the mean of its divisors is an integer number (52581904154604).

Almost surely, 2^{210020120102209} is an apocalyptic number.

It is an amenable number.

210020120102209 is a deficient number, since it is larger than the sum of its proper divisors (307496516207).

210020120102209 is an equidigital number, since it uses as much as digits as its factorization.

210020120102209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307496516206.

The product of its (nonzero) digits is 288, while the sum is 22.

The spelling of 210020120102209 in words is "two hundred ten trillion, twenty billion, one hundred twenty million, one hundred two thousand, two hundred nine".