13221221235411 has 12 divisors (see below), whose sum is σ = 20506383957192. Its totient is φ = 7554983563008.

The previous prime is 13221221235371. The next prime is 13221221235433. The reversal of 13221221235411 is 11453212212231.

13221221235411 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13221221235411 - 2⁹ = 13221221234899 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13221221234411) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44970140110 + ... + 44970140403.

It is an arithmetic number, because the mean of its divisors is an integer number (1708865329766).

Almost surely, 2^{13221221235411} is an apocalyptic number.

13221221235411 is a deficient number, since it is larger than the sum of its proper divisors (7285162721781).

13221221235411 is an equidigital number, since it uses as much as digits as its factorization.

13221221235411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89940280530 (or 89940280523 counting only the distinct ones).

The product of its digits is 5760, while the sum is 30.

Adding to 13221221235411 its reverse (11453212212231), we get a palindrome (24674433447642).

The spelling of 13221221235411 in words is "thirteen trillion, two hundred twenty-one billion, two hundred twenty-one million, two hundred thirty-five thousand, four hundred eleven".