13223002221 has 64 divisors (see below), whose sum is σ = 23299073280. Its totient is φ = 7397308800.

The previous prime is 13223002213. The next prime is 13223002249. The reversal of 13223002221 is 12220032231.

13223002221 is a `hidden beast` number, since 1 + 322 + 300 + 22 + 21 = 666.

It is not a de Polignac number, because 13223002221 - 2³ = 13223002213 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 13223002194 and 13223002203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13223002211) 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 in 63 ways as a sum of consecutive naturals, for example, 291601 + ... + 333881.

It is an arithmetic number, because the mean of its divisors is an integer number (364048020).

Almost surely, 2^13223002221 is an apocalyptic number.

13223002221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13223002221 is a deficient number, since it is larger than the sum of its proper divisors (10076071059).

13223002221 is an equidigital number, since it uses as much as digits as its factorization.

13223002221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42326 (or 42308 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 13223002221 its reverse (12220032231), we get a palindrome (25443034452).

The spelling of 13223002221 in words is "thirteen billion, two hundred twenty-three million, two thousand, two hundred twenty-one".