101201309609 has 2 divisors, whose sum is σ = 101201309610. Its totient is φ = 101201309608.

The previous prime is 101201309603. The next prime is 101201309617. The reversal of 101201309609 is 906903102101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83313049600 + 17888260009 = 288640^2 + 133747^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101201309609 is a prime.

It is not a weakly prime, because it can be changed into another prime (101201309603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50600654804 + 50600654805.

It is an arithmetic number, because the mean of its divisors is an integer number (50600654805).

Almost surely, 2^101201309609 is an apocalyptic number.

It is an amenable number.

101201309609 is a deficient number, since it is larger than the sum of its proper divisors (1).

101201309609 is an equidigital number, since it uses as much as digits as its factorization.

101201309609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2916, while the sum is 32.

The spelling of 101201309609 in words is "one hundred one billion, two hundred one million, three hundred nine thousand, six hundred nine".