100101091 has 2 divisors, whose sum is σ = 100101092. Its totient is φ = 100101090.

The previous prime is 100101073. The next prime is 100101097. The reversal of 100101091 is 190101001.

It is a strong prime.

It is an emirp because it is prime and its reverse (190101001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 100101091 - 2⁹ = 100100579 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (100101097) 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, 50050545 + 50050546.

It is an arithmetic number, because the mean of its divisors is an integer number (50050546).

Almost surely, 2^100101091 is an apocalyptic number.

100101091 is a deficient number, since it is larger than the sum of its proper divisors (1).

100101091 is an equidigital number, since it uses as much as digits as its factorization.

100101091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9, while the sum is 13.

The square root of 100101091 is about 10005.0532732215. The cubic root of 100101091 is about 464.3152383051.

Adding to 100101091 its reverse (190101001), we get a palindrome (290202092).

The spelling of 100101091 in words is "one hundred million, one hundred one thousand, ninety-one".