11520211 has 4 divisors (see below), whose sum is σ = 11540232. Its totient is φ = 11500192.

The previous prime is 11520191. The next prime is 11520227. The reversal of 11520211 is 11202511.

11520211 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11520211 - 2⁷ = 11520083 is a prime.

It is a super-2 number, since 2×11520211² = 265430522969042, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11520191 and 11520200.

It is not an unprimeable number, because it can be changed into a prime (11520911) 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, 9121 + ... + 10306.

It is an arithmetic number, because the mean of its divisors is an integer number (2885058).

Almost surely, 2^11520211 is an apocalyptic number.

11520211 is a deficient number, since it is larger than the sum of its proper divisors (20021).

11520211 is an equidigital number, since it uses as much as digits as its factorization.

11520211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20020.

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

The square root of 11520211 is about 3394.1436327887. The cubic root of 11520211 is about 225.8500258022.

Adding to 11520211 its reverse (11202511), we get a palindrome (22722722).

The spelling of 11520211 in words is "eleven million, five hundred twenty thousand, two hundred eleven".