101001010109 has 2 divisors, whose sum is σ = 101001010110. Its totient is φ = 101001010108.

The previous prime is 101001010081. The next prime is 101001010127. The reversal of 101001010109 is 901010100101.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76601632900 + 24399377209 = 276770^2 + 156203^2 .

It is a cyclic number.

It is not a de Polignac number, because 101001010109 - 2³⁶ = 32281533373 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 101001010093 and 101001010102.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101001010189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50500505054 + 50500505055.

It is an arithmetic number, because the mean of its divisors is an integer number (50500505055).

Almost surely, 2^101001010109 is an apocalyptic number.

It is an amenable number.

101001010109 is a deficient number, since it is larger than the sum of its proper divisors (1).

101001010109 is an equidigital number, since it uses as much as digits as its factorization.

101001010109 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.

The spelling of 101001010109 in words is "one hundred one billion, one million, ten thousand, one hundred nine".