11112021222217 has 2 divisors, whose sum is σ = 11112021222218. Its totient is φ = 11112021222216.

The previous prime is 11112021222187. The next prime is 11112021222241. The reversal of 11112021222217 is 71222212021111.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6758835250176 + 4353185972041 = 2599776^2 + 2086429^2 .

It is a cyclic number.

It is not a de Polignac number, because 11112021222217 - 2¹⁹ = 11112020697929 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11112021222191 and 11112021222200.

It is not a weakly prime, because it can be changed into another prime (11112021222277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5556010611108 + 5556010611109.

It is an arithmetic number, because the mean of its divisors is an integer number (5556010611109).

Almost surely, 2^{11112021222217} is an apocalyptic number.

It is an amenable number.

11112021222217 is a deficient number, since it is larger than the sum of its proper divisors (1).

11112021222217 is an equidigital number, since it uses as much as digits as its factorization.

11112021222217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 448, while the sum is 25.

Adding to 11112021222217 its reverse (71222212021111), we get a palindrome (82334233243328).

The spelling of 11112021222217 in words is "eleven trillion, one hundred twelve billion, twenty-one million, two hundred twenty-two thousand, two hundred seventeen".