20002011020191 has 2 divisors, whose sum is σ = 20002011020192. Its totient is φ = 20002011020190.

The previous prime is 20002011020137. The next prime is 20002011020203. The reversal of 20002011020191 is 19102011020002.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20002011020191 - 2²⁷ = 20001876802463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20002011020491) 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, 10001005510095 + 10001005510096.

It is an arithmetic number, because the mean of its divisors is an integer number (10001005510096).

Almost surely, 2^{20002011020191} is an apocalyptic number.

20002011020191 is a deficient number, since it is larger than the sum of its proper divisors (1).

20002011020191 is an equidigital number, since it uses as much as digits as its factorization.

20002011020191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 20002011020191 its reverse (19102011020002), we get a palindrome (39104022040193).

The spelling of 20002011020191 in words is "twenty trillion, two billion, eleven million, twenty thousand, one hundred ninety-one".