100101100091 has 2 divisors, whose sum is σ = 100101100092. Its totient is φ = 100101100090.

The previous prime is 100101100081. The next prime is 100101100103. The reversal of 100101100091 is 190001101001.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 100101100091 - 2⁶ = 100101100027 is a prime.

It is not a weakly prime, because it can be changed into another prime (100101100081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50050550045 + 50050550046.

It is an arithmetic number, because the mean of its divisors is an integer number (50050550046).

Almost surely, 2^100101100091 is an apocalyptic number.

100101100091 is a deficient number, since it is larger than the sum of its proper divisors (1).

100101100091 is an equidigital number, since it uses as much as digits as its factorization.

100101100091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9, while the sum is 14.

Adding to 100101100091 its reverse (190001101001), we get a palindrome (290102201092).

The spelling of 100101100091 in words is "one hundred billion, one hundred one million, one hundred thousand, ninety-one".