11230021321 has 2 divisors, whose sum is σ = 11230021322. Its totient is φ = 11230021320.

The previous prime is 11230021217. The next prime is 11230021339. The reversal of 11230021321 is 12312003211.

11230021321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7615005696 + 3615015625 = 87264^2 + 60125^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11230021321 is a prime.

It is a super-2 number, since 2×11230021321² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11230021295 and 11230021304.

It is not a weakly prime, because it can be changed into another prime (11230021391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5615010660 + 5615010661.

It is an arithmetic number, because the mean of its divisors is an integer number (5615010661).

Almost surely, 2^11230021321 is an apocalyptic number.

It is an amenable number.

11230021321 is a deficient number, since it is larger than the sum of its proper divisors (1).

11230021321 is an equidigital number, since it uses as much as digits as its factorization.

11230021321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 11230021321 its reverse (12312003211), we get a palindrome (23542024532).

The spelling of 11230021321 in words is "eleven billion, two hundred thirty million, twenty-one thousand, three hundred twenty-one".