12203222121217 has 2 divisors, whose sum is σ = 12203222121218. Its totient is φ = 12203222121216.

The previous prime is 12203222121187. The next prime is 12203222121313. The reversal of 12203222121217 is 71212122230221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11054501178561 + 1148720942656 = 3324831^2 + 1071784^2 .

It is a cyclic number.

It is not a de Polignac number, because 12203222121217 - 2³⁵ = 12168862382849 is a prime.

It is a super-2 number, since 2×12203222121217² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12203222121917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6101611060608 + 6101611060609.

It is an arithmetic number, because the mean of its divisors is an integer number (6101611060609).

Almost surely, 2^{12203222121217} is an apocalyptic number.

It is an amenable number.

12203222121217 is a deficient number, since it is larger than the sum of its proper divisors (1).

12203222121217 is an equidigital number, since it uses as much as digits as its factorization.

12203222121217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 28.

Adding to 12203222121217 its reverse (71212122230221), we get a palindrome (83415344351438).

The spelling of 12203222121217 in words is "twelve trillion, two hundred three billion, two hundred twenty-two million, one hundred twenty-one thousand, two hundred seventeen".