211100123317 has 2 divisors, whose sum is σ = 211100123318. Its totient is φ = 211100123316.

The previous prime is 211100123309. The next prime is 211100123327. The reversal of 211100123317 is 713321001112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 113859679761 + 97240443556 = 337431^2 + 311834^2 .

It is a cyclic number.

It is not a de Polignac number, because 211100123317 - 2³ = 211100123309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211100123327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105550061658 + 105550061659.

It is an arithmetic number, because the mean of its divisors is an integer number (105550061659).

Almost surely, 2^211100123317 is an apocalyptic number.

It is an amenable number.

211100123317 is a deficient number, since it is larger than the sum of its proper divisors (1).

211100123317 is an equidigital number, since it uses as much as digits as its factorization.

211100123317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252, while the sum is 22.

Adding to 211100123317 its reverse (713321001112), we get a palindrome (924421124429).

The spelling of 211100123317 in words is "two hundred eleven billion, one hundred million, one hundred twenty-three thousand, three hundred seventeen".