100001320127 has 2 divisors, whose sum is σ = 100001320128. Its totient is φ = 100001320126.

The previous prime is 100001320079. The next prime is 100001320193. The reversal of 100001320127 is 721023100001.

It is a weak prime.

It is an emirp because it is prime and its reverse (721023100001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 100001320127 - 2³⁶ = 31281843391 is a prime.

It is a super-2 number, since 2×100001320127² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100001320427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50000660063 + 50000660064.

It is an arithmetic number, because the mean of its divisors is an integer number (50000660064).

Almost surely, 2^100001320127 is an apocalyptic number.

100001320127 is a deficient number, since it is larger than the sum of its proper divisors (1).

100001320127 is an equidigital number, since it uses as much as digits as its factorization.

100001320127 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84, while the sum is 17.

Adding to 100001320127 its reverse (721023100001), we get a palindrome (821024420128).

The spelling of 100001320127 in words is "one hundred billion, one million, three hundred twenty thousand, one hundred twenty-seven".