20330102301991 has 2 divisors, whose sum is σ = 20330102301992. Its totient is φ = 20330102301990.

The previous prime is 20330102301989. The next prime is 20330102302057. The reversal of 20330102301991 is 19910320103302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20330102301991 - 2¹ = 20330102301989 is a prime.

Together with 20330102301989, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20330102301961) 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, 10165051150995 + 10165051150996.

It is an arithmetic number, because the mean of its divisors is an integer number (10165051150996).

Almost surely, 2^{20330102301991} is an apocalyptic number.

20330102301991 is a deficient number, since it is larger than the sum of its proper divisors (1).

20330102301991 is an equidigital number, since it uses as much as digits as its factorization.

20330102301991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8748, while the sum is 34.

The spelling of 20330102301991 in words is "twenty trillion, three hundred thirty billion, one hundred two million, three hundred one thousand, nine hundred ninety-one".