11040221530565 has 8 divisors (see below), whose sum is σ = 13379436786168. Its totient is φ = 8744729924800.

The previous prime is 11040221530427. The next prime is 11040221530601. The reversal of 11040221530565 is 56503512204011.

It can be written as a sum of positive squares in 4 ways, for example, as 5398271202724 + 5641950327841 = 2323418^2 + 2375279^2 .

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

It is not a de Polignac number, because 11040221530565 - 2⁸ = 11040221530309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10930911902 + ... + 10930912911.

It is an arithmetic number, because the mean of its divisors is an integer number (1672429598271).

Almost surely, 2^{11040221530565} is an apocalyptic number.

It is an amenable number.

11040221530565 is a deficient number, since it is larger than the sum of its proper divisors (2339215255603).

11040221530565 is a wasteful number, since it uses less digits than its factorization.

11040221530565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21861824919.

The product of its (nonzero) digits is 36000, while the sum is 35.

Adding to 11040221530565 its reverse (56503512204011), we get a palindrome (67543733734576).

The spelling of 11040221530565 in words is "eleven trillion, forty billion, two hundred twenty-one million, five hundred thirty thousand, five hundred sixty-five".