2001211119911 has 2 divisors, whose sum is σ = 2001211119912. Its totient is φ = 2001211119910.

The previous prime is 2001211119877. The next prime is 2001211119917. The reversal of 2001211119911 is 1199111121002.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2001211119911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2001211119917) 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, 1000605559955 + 1000605559956.

It is an arithmetic number, because the mean of its divisors is an integer number (1000605559956).

Almost surely, 2^{2001211119911} is an apocalyptic number.

2001211119911 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001211119911 is an equidigital number, since it uses as much as digits as its factorization.

2001211119911 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 29.

The spelling of 2001211119911 in words is "two trillion, one billion, two hundred eleven million, one hundred nineteen thousand, nine hundred eleven".