2001220001211 has 8 divisors (see below), whose sum is σ = 2677926163984. Its totient is φ = 1329330252960.

The previous prime is 2001220001093. The next prime is 2001220001219. The reversal of 2001220001211 is 1121000221002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-2001220001211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2001220001219) 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 7 ways as a sum of consecutive naturals, for example, 1204102660 + ... + 1204104321.

It is an arithmetic number, because the mean of its divisors is an integer number (334740770498).

Almost surely, 2^{2001220001211} is an apocalyptic number.

2001220001211 is a deficient number, since it is larger than the sum of its proper divisors (676706162773).

2001220001211 is a wasteful number, since it uses less digits than its factorization.

2001220001211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2408207261.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 2001220001211 its reverse (1121000221002), we get a palindrome (3122220222213).

The spelling of 2001220001211 in words is "two trillion, one billion, two hundred twenty million, one thousand, two hundred eleven".