220210211209 has 4 divisors (see below), whose sum is σ = 220219315920. Its totient is φ = 220201106500.

The previous prime is 220210211197. The next prime is 220210211227. The reversal of 220210211209 is 902112012022.

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 220210211209 - 2⁹ = 220210210697 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 220210211209.

It is not an unprimeable number, because it can be changed into a prime (220210211239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4515979 + ... + 4564480.

It is an arithmetic number, because the mean of its divisors is an integer number (55054828980).

Almost surely, 2^220210211209 is an apocalyptic number.

It is an amenable number.

220210211209 is a deficient number, since it is larger than the sum of its proper divisors (9104711).

220210211209 is an equidigital number, since it uses as much as digits as its factorization.

220210211209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9104710.

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

The spelling of 220210211209 in words is "two hundred twenty billion, two hundred ten million, two hundred eleven thousand, two hundred nine".