210000011917 has 2 divisors, whose sum is σ = 210000011918. Its totient is φ = 210000011916.

The previous prime is 210000011899. The next prime is 210000011953. The reversal of 210000011917 is 719110000012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 205436469001 + 4563542916 = 453251^2 + 67554^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210000011917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210000011017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105000005958 + 105000005959.

It is an arithmetic number, because the mean of its divisors is an integer number (105000005959).

Almost surely, 2^210000011917 is an apocalyptic number.

It is an amenable number.

210000011917 is a deficient number, since it is larger than the sum of its proper divisors (1).

210000011917 is an equidigital number, since it uses as much as digits as its factorization.

210000011917 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 126, while the sum is 22.

Adding to 210000011917 its reverse (719110000012), we get a palindrome (929110011929).

The spelling of 210000011917 in words is "two hundred ten billion, eleven thousand, nine hundred seventeen".