101113505209 has 2 divisors, whose sum is σ = 101113505210. Its totient is φ = 101113505208.

The previous prime is 101113505191. The next prime is 101113505261. The reversal of 101113505209 is 902505311101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54814515625 + 46298989584 = 234125^2 + 215172^2 .

It is a cyclic number.

It is not a de Polignac number, because 101113505209 - 2¹⁹ = 101112980921 is a prime.

It is not a weakly prime, because it can be changed into another prime (101113505279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50556752604 + 50556752605.

It is an arithmetic number, because the mean of its divisors is an integer number (50556752605).

Almost surely, 2^101113505209 is an apocalyptic number.

It is an amenable number.

101113505209 is a deficient number, since it is larger than the sum of its proper divisors (1).

101113505209 is an equidigital number, since it uses as much as digits as its factorization.

101113505209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1350, while the sum is 28.

The spelling of 101113505209 in words is "one hundred one billion, one hundred thirteen million, five hundred five thousand, two hundred nine".