1121455117 has 2 divisors, whose sum is σ = 1121455118. Its totient is φ = 1121455116.

The previous prime is 1121455087. The next prime is 1121455129. The reversal of 1121455117 is 7115541211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 865006921 + 256448196 = 29411^2 + 16014^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121455117 - 2⁷ = 1121454989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121455157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560727558 + 560727559.

It is an arithmetic number, because the mean of its divisors is an integer number (560727559).

Almost surely, 2^1121455117 is an apocalyptic number.

It is an amenable number.

1121455117 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121455117 is an equidigital number, since it uses as much as digits as its factorization.

1121455117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1400, while the sum is 28.

The square root of 1121455117 is about 33488.1339730956. The cubic root of 1121455117 is about 1038.9483689806.

Adding to 1121455117 its reverse (7115541211), we get a palindrome (8236996328).

The spelling of 1121455117 in words is "one billion, one hundred twenty-one million, four hundred fifty-five thousand, one hundred seventeen".