11522414521 has 4 divisors (see below), whose sum is σ = 11894105344. Its totient is φ = 11150723700.

The previous prime is 11522414507. The next prime is 11522414539. The reversal of 11522414521 is 12541422511.

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: 12541422511 = 19 ⋅660074869.

It is a cyclic number.

It is not a de Polignac number, because 11522414521 - 2²⁹ = 10985543609 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11522414521.

It is not an unprimeable number, because it can be changed into a prime (11522414621) 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 3 ways as a sum of consecutive naturals, for example, 185845365 + ... + 185845426.

It is an arithmetic number, because the mean of its divisors is an integer number (2973526336).

Almost surely, 2^11522414521 is an apocalyptic number.

It is an amenable number.

11522414521 is a deficient number, since it is larger than the sum of its proper divisors (371690823).

11522414521 is an equidigital number, since it uses as much as digits as its factorization.

11522414521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371690822.

The product of its digits is 3200, while the sum is 28.

The spelling of 11522414521 in words is "eleven billion, five hundred twenty-two million, four hundred fourteen thousand, five hundred twenty-one".