101010120091 has 2 divisors, whose sum is σ = 101010120092. Its totient is φ = 101010120090.

The previous prime is 101010120049. The next prime is 101010120103. The reversal of 101010120091 is 190021010101.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 101010120091 - 2¹¹ = 101010118043 is a prime.

It is not a weakly prime, because it can be changed into another prime (101010120191) 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, 50505060045 + 50505060046.

It is an arithmetic number, because the mean of its divisors is an integer number (50505060046).

Almost surely, 2^101010120091 is an apocalyptic number.

101010120091 is a deficient number, since it is larger than the sum of its proper divisors (1).

101010120091 is an equidigital number, since it uses as much as digits as its factorization.

101010120091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18, while the sum is 16.

Adding to 101010120091 its reverse (190021010101), we get a palindrome (291031130192).

The spelling of 101010120091 in words is "one hundred one billion, ten million, one hundred twenty thousand, ninety-one".