1222122211117 has 2 divisors, whose sum is σ = 1222122211118. Its totient is φ = 1222122211116.

The previous prime is 1222122211109. The next prime is 1222122211133. The reversal of 1222122211117 is 7111122212221.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 662814169956 + 559308041161 = 814134^2 + 747869^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222122211117 - 2³ = 1222122211109 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1222122211091 and 1222122211100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1222122211187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611061105558 + 611061105559.

It is an arithmetic number, because the mean of its divisors is an integer number (611061105559).

Almost surely, 2^{1222122211117} is an apocalyptic number.

It is an amenable number.

1222122211117 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222122211117 is an equidigital number, since it uses as much as digits as its factorization.

1222122211117 is an odious number, because the sum of its binary digits is odd.

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

Adding to 1222122211117 its reverse (7111122212221), we get a palindrome (8333244423338).

The spelling of 1222122211117 in words is "one trillion, two hundred twenty-two billion, one hundred twenty-two million, two hundred eleven thousand, one hundred seventeen".