211203322117 has 2 divisors, whose sum is σ = 211203322118. Its totient is φ = 211203322116.

The previous prime is 211203322111. The next prime is 211203322139. The reversal of 211203322117 is 711223302112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 191660959681 + 19542362436 = 437791^2 + 139794^2 .

It is a cyclic number.

It is not a de Polignac number, because 211203322117 - 2¹⁹ = 211202797829 is a prime.

It is a super-2 number, since 2×211203322117² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211203322091 and 211203322100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211203322111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105601661058 + 105601661059.

It is an arithmetic number, because the mean of its divisors is an integer number (105601661059).

Almost surely, 2^211203322117 is an apocalyptic number.

It is an amenable number.

211203322117 is a deficient number, since it is larger than the sum of its proper divisors (1).

211203322117 is an equidigital number, since it uses as much as digits as its factorization.

211203322117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 25.

Adding to 211203322117 its reverse (711223302112), we get a palindrome (922426624229).

The spelling of 211203322117 in words is "two hundred eleven billion, two hundred three million, three hundred twenty-two thousand, one hundred seventeen".