1121520329 has 2 divisors, whose sum is σ = 1121520330. Its totient is φ = 1121520328.

The previous prime is 1121520313. The next prime is 1121520343. The reversal of 1121520329 is 9230251211.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1050084025 + 71436304 = 32405^2 + 8452^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121520329 - 2⁴ = 1121520313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1121520298 and 1121520307.

It is not a weakly prime, because it can be changed into another prime (1121520229) 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, 560760164 + 560760165.

It is an arithmetic number, because the mean of its divisors is an integer number (560760165).

Almost surely, 2^1121520329 is an apocalyptic number.

It is an amenable number.

1121520329 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121520329 is an equidigital number, since it uses as much as digits as its factorization.

1121520329 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 1121520329 is about 33489.1076172537. The cubic root of 1121520329 is about 1038.9685066829.

The spelling of 1121520329 in words is "one billion, one hundred twenty-one million, five hundred twenty thousand, three hundred twenty-nine".