11522131441 has 4 divisors (see below), whose sum is σ = 11679968932. Its totient is φ = 11364293952.

The previous prime is 11522131393. The next prime is 11522131493. The reversal of 11522131441 is 14413122511.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 9229637041 + 2292494400 = 96071^2 + 47880^2 .

It is a cyclic number.

It is not a de Polignac number, because 11522131441 - 2⁹ = 11522130929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11522131541) 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, 78918636 + ... + 78918781.

It is an arithmetic number, because the mean of its divisors is an integer number (2919992233).

Almost surely, 2^11522131441 is an apocalyptic number.

It is an amenable number.

11522131441 is a deficient number, since it is larger than the sum of its proper divisors (157837491).

11522131441 is an equidigital number, since it uses as much as digits as its factorization.

11522131441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157837490.

The product of its digits is 960, while the sum is 25.

Adding to 11522131441 its reverse (14413122511), we get a palindrome (25935253952).

The spelling of 11522131441 in words is "eleven billion, five hundred twenty-two million, one hundred thirty-one thousand, four hundred forty-one".