1121222117 has 2 divisors, whose sum is σ = 1121222118. Its totient is φ = 1121222116.

The previous prime is 1121222093. The next prime is 1121222171. The reversal of 1121222117 is 7112221211.

It is a happy number.

Together with next prime (1121222171) 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., 973502401 + 147719716 = 31201^2 + 12154^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1121222117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121222197) 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, 560611058 + 560611059.

It is an arithmetic number, because the mean of its divisors is an integer number (560611059).

Almost surely, 2^1121222117 is an apocalyptic number.

It is an amenable number.

1121222117 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121222117 is an equidigital number, since it uses as much as digits as its factorization.

1121222117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 112, while the sum is 20.

The square root of 1121222117 is about 33484.6549481998. The cubic root of 1121222117 is about 1038.8764113566.

Adding to 1121222117 its reverse (7112221211), we get a palindrome (8233443328).

The spelling of 1121222117 in words is "one billion, one hundred twenty-one million, two hundred twenty-two thousand, one hundred seventeen".