100013120491 has 2 divisors, whose sum is σ = 100013120492. Its totient is φ = 100013120490.

The previous prime is 100013120437. The next prime is 100013120539. The reversal of 100013120491 is 194021310001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 100013120491 - 2²¹ = 100011023339 is a prime.

It is not a weakly prime, because it can be changed into another prime (100013120401) 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, 50006560245 + 50006560246.

It is an arithmetic number, because the mean of its divisors is an integer number (50006560246).

Almost surely, 2^100013120491 is an apocalyptic number.

100013120491 is a deficient number, since it is larger than the sum of its proper divisors (1).

100013120491 is an equidigital number, since it uses as much as digits as its factorization.

100013120491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 22.

Adding to 100013120491 its reverse (194021310001), we get a palindrome (294034430492).

The spelling of 100013120491 in words is "one hundred billion, thirteen million, one hundred twenty thousand, four hundred ninety-one".