11320221365 has 4 divisors (see below), whose sum is σ = 13584265644. Its totient is φ = 9056177088.

The previous prime is 11320221329. The next prime is 11320221371. The reversal of 11320221365 is 56312202311.

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 8923825156 + 2396396209 = 94466^2 + 48953^2 .

It is a cyclic number.

It is not a de Polignac number, because 11320221365 - 2⁶ = 11320221301 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 3 ways as a sum of consecutive naturals, for example, 1132022132 + ... + 1132022141.

It is an arithmetic number, because the mean of its divisors is an integer number (3396066411).

Almost surely, 2^11320221365 is an apocalyptic number.

It is an amenable number.

11320221365 is a deficient number, since it is larger than the sum of its proper divisors (2264044279).

11320221365 is an equidigital number, since it uses as much as digits as its factorization.

11320221365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2264044278.

The product of its (nonzero) digits is 2160, while the sum is 26.

Adding to 11320221365 its reverse (56312202311), we get a palindrome (67632423676).

The spelling of 11320221365 in words is "eleven billion, three hundred twenty million, two hundred twenty-one thousand, three hundred sixty-five".