100221201012091 has 2 divisors, whose sum is σ = 100221201012092. Its totient is φ = 100221201012090.

The previous prime is 100221201012067. The next prime is 100221201012143. The reversal of 100221201012091 is 190210102122001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 100221201012091 - 2⁷ = 100221201011963 is a prime.

It is not a weakly prime, because it can be changed into another prime (100221201012001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50110600506045 + 50110600506046.

It is an arithmetic number, because the mean of its divisors is an integer number (50110600506046).

Almost surely, 2^{100221201012091} is an apocalyptic number.

100221201012091 is a deficient number, since it is larger than the sum of its proper divisors (1).

100221201012091 is an equidigital number, since it uses as much as digits as its factorization.

100221201012091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 22.

Adding to 100221201012091 its reverse (190210102122001), we get a palindrome (290431303134092).

The spelling of 100221201012091 in words is "one hundred trillion, two hundred twenty-one billion, two hundred one million, twelve thousand, ninety-one".