12220100121217 has 2 divisors, whose sum is σ = 12220100121218. Its totient is φ = 12220100121216.

The previous prime is 12220100121169. The next prime is 12220100121247. The reversal of 12220100121217 is 71212100102221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7998353234496 + 4221746886721 = 2828136^2 + 2054689^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12220100121217 is a prime.

It is a super-2 number, since 2×12220100121217² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12220100121247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6110050060608 + 6110050060609.

It is an arithmetic number, because the mean of its divisors is an integer number (6110050060609).

Almost surely, 2^{12220100121217} is an apocalyptic number.

It is an amenable number.

12220100121217 is a deficient number, since it is larger than the sum of its proper divisors (1).

12220100121217 is an equidigital number, since it uses as much as digits as its factorization.

12220100121217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 224, while the sum is 22.

Adding to 12220100121217 its reverse (71212100102221), we get a palindrome (83432200223438).

The spelling of 12220100121217 in words is "twelve trillion, two hundred twenty billion, one hundred million, one hundred twenty-one thousand, two hundred seventeen".