11255533424521 has 8 divisors (see below), whose sum is σ = 11412176559840. Its totient is φ = 11098956714912.

The previous prime is 11255533424507. The next prime is 11255533424549. The reversal of 11255533424521 is 12542433555211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11255533424521 - 2¹⁷ = 11255533293449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11255533424561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16265131 + ... + 16943008.

It is an arithmetic number, because the mean of its divisors is an integer number (1426522069980).

Almost surely, 2^{11255533424521} is an apocalyptic number.

It is an amenable number.

11255533424521 is a deficient number, since it is larger than the sum of its proper divisors (156643135319).

11255533424521 is an equidigital number, since it uses as much as digits as its factorization.

11255533424521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33212855.

The product of its digits is 720000, while the sum is 43.

Adding to 11255533424521 its reverse (12542433555211), we get a palindrome (23797966979732).

The spelling of 11255533424521 in words is "eleven trillion, two hundred fifty-five billion, five hundred thirty-three million, four hundred twenty-four thousand, five hundred twenty-one".