2001220012211 has 8 divisors (see below), whose sum is σ = 2333784271200. Its totient is φ = 1715331438744.

The previous prime is 2001220012193. The next prime is 2001220012223. The reversal of 2001220012211 is 1122100221002.

It is not a de Polignac number, because 2001220012211 - 2⁶ = 2001220012147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2001220012111) 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 7 ways as a sum of consecutive naturals, for example, 2917229996 + ... + 2917230681.

It is an arithmetic number, because the mean of its divisors is an integer number (291723033900).

Almost surely, 2^{2001220012211} is an apocalyptic number.

2001220012211 is a deficient number, since it is larger than the sum of its proper divisors (332564258989).

2001220012211 is an frugal number, since it uses more digits than its factorization.

2001220012211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5834460698 (or 5834460684 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2001220012211 its reverse (1122100221002), we get a palindrome (3123320233213).

The spelling of 2001220012211 in words is "two trillion, one billion, two hundred twenty million, twelve thousand, two hundred eleven".