1222120222117 has 2 divisors, whose sum is σ = 1222120222118. Its totient is φ = 1222120222116.

The previous prime is 1222120222109. The next prime is 1222120222171. The reversal of 1222120222117 is 7112220212221.

Together with next prime (1222120222171) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 843607347361 + 378512874756 = 918481^2 + 615234^2 .

It is an emirp because it is prime and its reverse (7112220212221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1222120222117 - 2³ = 1222120222109 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1222120222091 and 1222120222100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1222120223117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611060111058 + 611060111059.

It is an arithmetic number, because the mean of its divisors is an integer number (611060111059).

Almost surely, 2^{1222120222117} is an apocalyptic number.

It is an amenable number.

1222120222117 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222120222117 is an equidigital number, since it uses as much as digits as its factorization.

1222120222117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 896, while the sum is 25.

Adding to 1222120222117 its reverse (7112220212221), we get a palindrome (8334340434338).

The spelling of 1222120222117 in words is "one trillion, two hundred twenty-two billion, one hundred twenty million, two hundred twenty-two thousand, one hundred seventeen".