101269009 has 2 divisors, whose sum is σ = 101269010. Its totient is φ = 101269008.

The previous prime is 101269001. The next prime is 101269027. The reversal of 101269009 is 900962101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81270225 + 19998784 = 9015^2 + 4472^2 .

It is a cyclic number.

It is not a de Polignac number, because 101269009 - 2³ = 101269001 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (101269001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50634504 + 50634505.

It is an arithmetic number, because the mean of its divisors is an integer number (50634505).

Almost surely, 2^101269009 is an apocalyptic number.

It is an amenable number.

101269009 is a deficient number, since it is larger than the sum of its proper divisors (1).

101269009 is an equidigital number, since it uses as much as digits as its factorization.

101269009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 28.

The square root of 101269009 is about 10063.2504192234. The cubic root of 101269009 is about 466.1140421581.

The spelling of 101269009 in words is "one hundred one million, two hundred sixty-nine thousand, nine".