101208129917 has 2 divisors, whose sum is σ = 101208129918. Its totient is φ = 101208129916.

The previous prime is 101208129899. The next prime is 101208129973. The reversal of 101208129917 is 719921802101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 87764655001 + 13443474916 = 296251^2 + 115946^2 .

It is a cyclic number.

It is not a de Polignac number, because 101208129917 - 2⁶ = 101208129853 is a prime.

It is a super-2 number, since 2×101208129917² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101208120917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50604064958 + 50604064959.

It is an arithmetic number, because the mean of its divisors is an integer number (50604064959).

Almost surely, 2^101208129917 is an apocalyptic number.

It is an amenable number.

101208129917 is a deficient number, since it is larger than the sum of its proper divisors (1).

101208129917 is an equidigital number, since it uses as much as digits as its factorization.

101208129917 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 41.

The spelling of 101208129917 in words is "one hundred one billion, two hundred eight million, one hundred twenty-nine thousand, nine hundred seventeen".