11112021210217 has 2 divisors, whose sum is σ = 11112021210218. Its totient is φ = 11112021210216.

The previous prime is 11112021210187. The next prime is 11112021210293. The reversal of 11112021210217 is 71201212021111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7430116478976 + 3681904731241 = 2725824^2 + 1918829^2 .

It is an emirp because it is prime and its reverse (71201212021111) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11112021210217 is a prime.

It is not a weakly prime, because it can be changed into another prime (11112021213217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5556010605108 + 5556010605109.

It is an arithmetic number, because the mean of its divisors is an integer number (5556010605109).

Almost surely, 2^{11112021210217} is an apocalyptic number.

It is an amenable number.

11112021210217 is a deficient number, since it is larger than the sum of its proper divisors (1).

11112021210217 is an equidigital number, since it uses as much as digits as its factorization.

11112021210217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112, while the sum is 22.

Adding to 11112021210217 its reverse (71201212021111), we get a palindrome (82313233231328).

The spelling of 11112021210217 in words is "eleven trillion, one hundred twelve billion, twenty-one million, two hundred ten thousand, two hundred seventeen".