1121178241 has 2 divisors, whose sum is σ = 1121178242. Its totient is φ = 1121178240.

The previous prime is 1121178229. The next prime is 1121178257. The reversal of 1121178241 is 1428711211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1112889600 + 8288641 = 33360^2 + 2879^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1121178241 is a prime.

It is not a weakly prime, because it can be changed into another prime (1121178221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560589120 + 560589121.

It is an arithmetic number, because the mean of its divisors is an integer number (560589121).

Almost surely, 2^1121178241 is an apocalyptic number.

It is an amenable number.

1121178241 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121178241 is an equidigital number, since it uses as much as digits as its factorization.

1121178241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 896, while the sum is 28.

The square root of 1121178241 is about 33483.9997760124. Note that the first 3 decimals coincide. The cubic root of 1121178241 is about 1038.8628599721.

Adding to 1121178241 its reverse (1428711211), we get a palindrome (2549889452).

It can be divided in two parts, 112117824 and 1, that added together give a triangular number (112117825 = T₁₄₉₇₄).

The spelling of 1121178241 in words is "one billion, one hundred twenty-one million, one hundred seventy-eight thousand, two hundred forty-one".