13221011 has 2 divisors, whose sum is σ = 13221012. Its totient is φ = 13221010.

The previous prime is 13221007. The next prime is 13221029. The reversal of 13221011 is 11012231.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13221011 - 2² = 13221007 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13220983 and 13221001.

It is not a weakly prime, because it can be changed into another prime (13221031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6610505 + 6610506.

It is an arithmetic number, because the mean of its divisors is an integer number (6610506).

Almost surely, 2^13221011 is an apocalyptic number.

13221011 is a deficient number, since it is larger than the sum of its proper divisors (1).

13221011 is an equidigital number, since it uses as much as digits as its factorization.

13221011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 13221011 is about 3636.0708188923. The cubic root of 13221011 is about 236.4584774545.

Adding to 13221011 its reverse (11012231), we get a palindrome (24233242).

The spelling of 13221011 in words is "thirteen million, two hundred twenty-one thousand, eleven".