10001210909 has 2 divisors, whose sum is σ = 10001210910. Its totient is φ = 10001210908.

The previous prime is 10001210881. The next prime is 10001210977. The reversal of 10001210909 is 90901210001.

10001210909 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5987354884 + 4013856025 = 77378^2 + 63355^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10001210909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10001219909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5000605454 + 5000605455.

It is an arithmetic number, because the mean of its divisors is an integer number (5000605455).

Almost surely, 2^10001210909 is an apocalyptic number.

It is an amenable number.

10001210909 is a deficient number, since it is larger than the sum of its proper divisors (1).

10001210909 is an equidigital number, since it uses as much as digits as its factorization.

10001210909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162, while the sum is 23.

The spelling of 10001210909 in words is "ten billion, one million, two hundred ten thousand, nine hundred nine".