2001211120211 has 2 divisors, whose sum is σ = 2001211120212. Its totient is φ = 2001211120210.

The previous prime is 2001211120177. The next prime is 2001211120219. The reversal of 2001211120211 is 1120211121002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2001211120211 - 2¹⁸ = 2001210858067 is a prime.

It is not a weakly prime, because it can be changed into another prime (2001211120219) 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 as a sum of consecutive naturals, namely, 1000605560105 + 1000605560106.

It is an arithmetic number, because the mean of its divisors is an integer number (1000605560106).

Almost surely, 2^{2001211120211} is an apocalyptic number.

2001211120211 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001211120211 is an equidigital number, since it uses as much as digits as its factorization.

2001211120211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 2001211120211 its reverse (1120211121002), we get a palindrome (3121422241213).

The spelling of 2001211120211 in words is "two trillion, one billion, two hundred eleven million, one hundred twenty thousand, two hundred eleven".