13221210226 has 8 divisors (see below), whose sum is σ = 22664931840. Its totient is φ = 5666232948.

The previous prime is 13221210217. The next prime is 13221210227. The reversal of 13221210226 is 62201212231.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 13221210197 and 13221210206.

It is not an unprimeable number, because it can be changed into a prime (13221210227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 472186066 + ... + 472186093.

It is an arithmetic number, because the mean of its divisors is an integer number (2833116480).

Almost surely, 2^13221210226 is an apocalyptic number.

13221210226 is a deficient number, since it is larger than the sum of its proper divisors (9443721614).

13221210226 is an equidigital number, since it uses as much as digits as its factorization.

13221210226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 944372168.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 13221210226 its reverse (62201212231), we get a palindrome (75422422457).

The spelling of 13221210226 in words is "thirteen billion, two hundred twenty-one million, two hundred ten thousand, two hundred twenty-six".