1123521151 has 2 divisors, whose sum is σ = 1123521152. Its totient is φ = 1123521150.

The previous prime is 1123521031. The next prime is 1123521163. The reversal of 1123521151 is 1511253211.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1123521151 - 2⁷ = 1123521023 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1123531151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561760575 + 561760576.

It is an arithmetic number, because the mean of its divisors is an integer number (561760576).

Almost surely, 2^1123521151 is an apocalyptic number.

1123521151 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123521151 is an equidigital number, since it uses as much as digits as its factorization.

1123521151 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 300, while the sum is 22.

The square root of 1123521151 is about 33518.9670336065. The cubic root of 1123521151 is about 1039.5859887470.

Adding to 1123521151 its reverse (1511253211), we get a palindrome (2634774362).

The spelling of 1123521151 in words is "one billion, one hundred twenty-three million, five hundred twenty-one thousand, one hundred fifty-one".