101010010109 has 2 divisors, whose sum is σ = 101010010110. Its totient is φ = 101010010108.

The previous prime is 101010010093. The next prime is 101010010159. The reversal of 101010010109 is 901010010101.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59221656025 + 41788354084 = 243355^2 + 204422^2 .

It is a cyclic number.

It is not a de Polignac number, because 101010010109 - 2⁴ = 101010010093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 101010010093 and 101010010102.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101010010159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50505005054 + 50505005055.

It is an arithmetic number, because the mean of its divisors is an integer number (50505005055).

Almost surely, 2^101010010109 is an apocalyptic number.

It is an amenable number.

101010010109 is a deficient number, since it is larger than the sum of its proper divisors (1).

101010010109 is an equidigital number, since it uses as much as digits as its factorization.

101010010109 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 14.

The spelling of 101010010109 in words is "one hundred one billion, ten million, ten thousand, one hundred nine".