11130521 has 2 divisors, whose sum is σ = 11130522. Its totient is φ = 11130520.

The previous prime is 11130517. The next prime is 11130533. The reversal of 11130521 is 12503111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6948496 + 4182025 = 2636^2 + 2045^2 .

It is a cyclic number.

It is not a de Polignac number, because 11130521 - 2² = 11130517 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11130496 and 11130505.

It is not a weakly prime, because it can be changed into another prime (11130221) 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, 5565260 + 5565261.

It is an arithmetic number, because the mean of its divisors is an integer number (5565261).

Almost surely, 2^11130521 is an apocalyptic number.

It is an amenable number.

11130521 is a deficient number, since it is larger than the sum of its proper divisors (1).

11130521 is an equidigital number, since it uses as much as digits as its factorization.

11130521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30, while the sum is 14.

The square root of 11130521 is about 3336.2435462658. The cubic root of 11130521 is about 223.2741772978.

Adding to 11130521 its reverse (12503111), we get a palindrome (23633632).

The spelling of 11130521 in words is "eleven million, one hundred thirty thousand, five hundred twenty-one".