100221010291 has 2 divisors, whose sum is σ = 100221010292. Its totient is φ = 100221010290.

The previous prime is 100221010283. The next prime is 100221010349. The reversal of 100221010291 is 192010122001.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (192010122001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 100221010291 - 2³ = 100221010283 is a prime.

It is not a weakly prime, because it can be changed into another prime (100221010391) 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, 50110505145 + 50110505146.

It is an arithmetic number, because the mean of its divisors is an integer number (50110505146).

Almost surely, 2^100221010291 is an apocalyptic number.

100221010291 is a deficient number, since it is larger than the sum of its proper divisors (1).

100221010291 is an equidigital number, since it uses as much as digits as its factorization.

100221010291 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 100221010291 its reverse (192010122001), we get a palindrome (292231132292).

The spelling of 100221010291 in words is "one hundred billion, two hundred twenty-one million, ten thousand, two hundred ninety-one".