100120104817 has 2 divisors, whose sum is σ = 100120104818. Its totient is φ = 100120104816.

The previous prime is 100120104731. The next prime is 100120104853. The reversal of 100120104817 is 718401021001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 98410199616 + 1709905201 = 313704^2 + 41351^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100120104817 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 100120104791 and 100120104800.

It is not a weakly prime, because it can be changed into another prime (100120107817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50060052408 + 50060052409.

It is an arithmetic number, because the mean of its divisors is an integer number (50060052409).

Almost surely, 2^100120104817 is an apocalyptic number.

It is an amenable number.

100120104817 is a deficient number, since it is larger than the sum of its proper divisors (1).

100120104817 is an equidigital number, since it uses as much as digits as its factorization.

100120104817 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 448, while the sum is 25.

Adding to 100120104817 its reverse (718401021001), we get a palindrome (818521125818).

The spelling of 100120104817 in words is "one hundred billion, one hundred twenty million, one hundred four thousand, eight hundred seventeen".