11320322521 has 4 divisors (see below), whose sum is σ = 11710678500. Its totient is φ = 10929966544.

The previous prime is 11320322471. The next prime is 11320322537. The reversal of 11320322521 is 12522302311.

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 9707175625 + 1613146896 = 98525^2 + 40164^2 .

It is a cyclic number.

It is not a de Polignac number, because 11320322521 - 2⁷ = 11320322393 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11320322492 and 11320322501.

It is not an unprimeable number, because it can be changed into a prime (11320322581) 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, 195177946 + ... + 195178003.

It is an arithmetic number, because the mean of its divisors is an integer number (2927669625).

Almost surely, 2^11320322521 is an apocalyptic number.

It is an amenable number.

11320322521 is a deficient number, since it is larger than the sum of its proper divisors (390355979).

11320322521 is an equidigital number, since it uses as much as digits as its factorization.

11320322521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390355978.

The product of its (nonzero) digits is 720, while the sum is 22.

Adding to 11320322521 its reverse (12522302311), we get a palindrome (23842624832).

The spelling of 11320322521 in words is "eleven billion, three hundred twenty million, three hundred twenty-two thousand, five hundred twenty-one".