20301120099991 has 2 divisors, whose sum is σ = 20301120099992. Its totient is φ = 20301120099990.

The previous prime is 20301120099989. The next prime is 20301120100021. The reversal of 20301120099991 is 19999002110302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20301120099991 - 2¹ = 20301120099989 is a prime.

It is a super-3 number, since 3×20301120099991³ (a number of 41 digits) contains 333 as substring.

Together with 20301120099989, 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 (20301120099901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10150560049995 + 10150560049996.

It is an arithmetic number, because the mean of its divisors is an integer number (10150560049996).

Almost surely, 2^{20301120099991} is an apocalyptic number.

20301120099991 is a deficient number, since it is larger than the sum of its proper divisors (1).

20301120099991 is an equidigital number, since it uses as much as digits as its factorization.

20301120099991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 78732, while the sum is 46.

The spelling of 20301120099991 in words is "twenty trillion, three hundred one billion, one hundred twenty million, ninety-nine thousand, nine hundred ninety-one".