11200521 has 4 divisors (see below), whose sum is σ = 14934032. Its totient is φ = 7467012.

The previous prime is 11200499. The next prime is 11200531. The reversal of 11200521 is 12500211.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12500211 = 3 ⋅4166737.

It is not a de Polignac number, because 11200521 - 2⁵ = 11200489 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11200497 and 11200506.

It is not an unprimeable number, because it can be changed into a prime (11200531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1866751 + ... + 1866756.

It is an arithmetic number, because the mean of its divisors is an integer number (3733508).

Almost surely, 2^11200521 is an apocalyptic number.

It is an amenable number.

11200521 is a deficient number, since it is larger than the sum of its proper divisors (3733511).

11200521 is an equidigital number, since it uses as much as digits as its factorization.

11200521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3733510.

The product of its (nonzero) digits is 20, while the sum is 12.

The square root of 11200521 is about 3346.7179444943. The cubic root of 11200521 is about 223.7412576300.

Adding to 11200521 its reverse (12500211), we get a palindrome (23700732).

The spelling of 11200521 in words is "eleven million, two hundred thousand, five hundred twenty-one".