11120521 has 4 divisors (see below), whose sum is σ = 11140372. Its totient is φ = 11100672.

The previous prime is 11120519. The next prime is 11120579. The reversal of 11120521 is 12502111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12502111 = 1019 ⋅12269.

It can be written as a sum of positive squares in 2 ways, for example, as 9765625 + 1354896 = 3125^2 + 1164^2 .

It is a cyclic number.

It is not a de Polignac number, because 11120521 - 2¹ = 11120519 is a prime.

It is a super-2 number, since 2×11120521² = 247331974622882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11120581) 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 in 3 ways as a sum of consecutive naturals, for example, 9060 + ... + 10213.

It is an arithmetic number, because the mean of its divisors is an integer number (2785093).

Almost surely, 2^11120521 is an apocalyptic number.

It is an amenable number.

11120521 is a deficient number, since it is larger than the sum of its proper divisors (19851).

11120521 is an equidigital number, since it uses as much as digits as its factorization.

11120521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19850.

The product of its (nonzero) digits is 20, while the sum is 13.

The square root of 11120521 is about 3334.7445179504. The cubic root of 11120521 is about 223.2072918165.

Adding to 11120521 its reverse (12502111), we get a palindrome (23622632).

The spelling of 11120521 in words is "eleven million, one hundred twenty thousand, five hundred twenty-one".