2010221121209 has 12 divisors (see below), whose sum is σ = 2370453649524. Its totient is φ = 1699443293184.

The previous prime is 2010221121187. The next prime is 2010221121221. The reversal of 2010221121209 is 9021211220102.

It can be written as a sum of positive squares in 2 ways, for example, as 861620215225 + 1148600905984 = 928235^2 + 1071728^2 .

It is not a de Polignac number, because 2010221121209 - 2²⁴ = 2010204343993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2010221121289) 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 11 ways as a sum of consecutive naturals, for example, 280989032 + ... + 280996185.

It is an arithmetic number, because the mean of its divisors is an integer number (197537804127).

Almost surely, 2^{2010221121209} is an apocalyptic number.

It is an amenable number.

2010221121209 is a deficient number, since it is larger than the sum of its proper divisors (360232528315).

2010221121209 is an equidigital number, since it uses as much as digits as its factorization.

2010221121209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561985304 (or 561985297 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 23.

It can be divided in two parts, 201022 and 1121209, that added together give a palindrome (1322231).

The spelling of 2010221121209 in words is "two trillion, ten billion, two hundred twenty-one million, one hundred twenty-one thousand, two hundred nine".