210220020209 has 4 divisors (see below), whose sum is σ = 210337924416. Its totient is φ = 210102116004.

The previous prime is 210220020187. The next prime is 210220020221. The reversal of 210220020209 is 902020022012.

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 210220020209 - 2⁸ = 210220019953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210220020289) 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, 58949429 + ... + 58952994.

It is an arithmetic number, because the mean of its divisors is an integer number (52584481104).

Almost surely, 2^210220020209 is an apocalyptic number.

It is an amenable number.

210220020209 is a deficient number, since it is larger than the sum of its proper divisors (117904207).

210220020209 is a wasteful number, since it uses less digits than its factorization.

210220020209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117904206.

The product of its (nonzero) digits is 288, while the sum is 20.

The spelling of 210220020209 in words is "two hundred ten billion, two hundred twenty million, twenty thousand, two hundred nine".