11232320081 has 2 divisors, whose sum is σ = 11232320082. Its totient is φ = 11232320080.

The previous prime is 11232320059. The next prime is 11232320111. The reversal of 11232320081 is 18002323211.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9606940225 + 1625379856 = 98015^2 + 40316^2 .

It is a cyclic number.

It is not a de Polignac number, because 11232320081 - 2¹⁴ = 11232303697 is a prime.

It is a super-2 number, since 2×11232320081² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11232370081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5616160040 + 5616160041.

It is an arithmetic number, because the mean of its divisors is an integer number (5616160041).

Almost surely, 2^11232320081 is an apocalyptic number.

It is an amenable number.

11232320081 is a deficient number, since it is larger than the sum of its proper divisors (1).

11232320081 is an equidigital number, since it uses as much as digits as its factorization.

11232320081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 11232320081 its reverse (18002323211), we get a palindrome (29234643292).

The spelling of 11232320081 in words is "eleven billion, two hundred thirty-two million, three hundred twenty thousand, eighty-one".