11521135201 has 4 divisors (see below), whose sum is σ = 11521747972. Its totient is φ = 11520522432.

The previous prime is 11521135189. The next prime is 11521135217. The reversal of 11521135201 is 10253112511.

11521135201 is digitally balanced in base 2, 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, and also an emirpimes, since its reverse is a distinct semiprime: 10253112511 = 43 ⋅238444477.

It can be written as a sum of positive squares in 2 ways, for example, as 3294645201 + 8226490000 = 57399^2 + 90700^2 .

It is a cyclic number.

It is not a de Polignac number, because 11521135201 - 2⁵ = 11521135169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11521135271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 277260 + ... + 316093.

It is an arithmetic number, because the mean of its divisors is an integer number (2880436993).

Almost surely, 2^11521135201 is an apocalyptic number.

It is an amenable number.

11521135201 is a deficient number, since it is larger than the sum of its proper divisors (612771).

11521135201 is an equidigital number, since it uses as much as digits as its factorization.

11521135201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612770.

The product of its (nonzero) digits is 300, while the sum is 22.

Adding to 11521135201 its reverse (10253112511), we get a palindrome (21774247712).

The spelling of 11521135201 in words is "eleven billion, five hundred twenty-one million, one hundred thirty-five thousand, two hundred one".