1121024521 has 2 divisors, whose sum is σ = 1121024522. Its totient is φ = 1121024520.

The previous prime is 1121024473. The next prime is 1121024533. The reversal of 1121024521 is 1254201211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1113156496 + 7868025 = 33364^2 + 2805^2 .

It is an emirp because it is prime and its reverse (1254201211) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1121024521 is a prime.

It is not a weakly prime, because it can be changed into another prime (1121024581) 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, 560512260 + 560512261.

It is an arithmetic number, because the mean of its divisors is an integer number (560512261).

Almost surely, 2^1121024521 is an apocalyptic number.

It is an amenable number.

1121024521 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121024521 is an equidigital number, since it uses as much as digits as its factorization.

1121024521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 1121024521 is about 33481.7042726322. The cubic root of 1121024521 is about 1038.8153797732.

Adding to 1121024521 its reverse (1254201211), we get a palindrome (2375225732).

The spelling of 1121024521 in words is "one billion, one hundred twenty-one million, twenty-four thousand, five hundred twenty-one".