11220513 has 4 divisors (see below), whose sum is σ = 14960688. Its totient is φ = 7480340.

The previous prime is 11220491. The next prime is 11220533. The reversal of 11220513 is 31502211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11220513 - 2¹³ = 11212321 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11220492 and 11220501.

It is not an unprimeable number, because it can be changed into a prime (11220533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1870083 + ... + 1870088.

It is an arithmetic number, because the mean of its divisors is an integer number (3740172).

Almost surely, 2^11220513 is an apocalyptic number.

It is an amenable number.

11220513 is a deficient number, since it is larger than the sum of its proper divisors (3740175).

11220513 is an equidigital number, since it uses as much as digits as its factorization.

11220513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3740174.

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 11220513 is about 3349.7034197075. The cubic root of 11220513 is about 223.8742983616.

Adding to 11220513 its reverse (31502211), we get a palindrome (42722724).

The spelling of 11220513 in words is "eleven million, two hundred twenty thousand, five hundred thirteen".