201123230100017 has 2 divisors, whose sum is σ = 201123230100018. Its totient is φ = 201123230100016.

The previous prime is 201123230099993. The next prime is 201123230100113. The reversal of 201123230100017 is 710001032321102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 110392194819361 + 90731035280656 = 10506769^2 + 9525284^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201123230100017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 201123230099965 and 201123230100001.

It is not a weakly prime, because it can be changed into another prime (201123230100217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100561615050008 + 100561615050009.

It is an arithmetic number, because the mean of its divisors is an integer number (100561615050009).

Almost surely, 2^{201123230100017} is an apocalyptic number.

It is an amenable number.

201123230100017 is a deficient number, since it is larger than the sum of its proper divisors (1).

201123230100017 is an equidigital number, since it uses as much as digits as its factorization.

201123230100017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 23.

Adding to 201123230100017 its reverse (710001032321102), we get a palindrome (911124262421119).

The spelling of 201123230100017 in words is "two hundred one trillion, one hundred twenty-three billion, two hundred thirty million, one hundred thousand, seventeen".