13221021113 has 8 divisors (see below), whose sum is σ = 13411391616. Its totient is φ = 13031390800.

The previous prime is 13221021109. The next prime is 13221021133. The reversal of 13221021113 is 31112012231.

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

It is a cyclic number.

It is not a de Polignac number, because 13221021113 - 2² = 13221021109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13221021091 and 13221021100.

It is not an unprimeable number, because it can be changed into a prime (13221021133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149018 + ... + 220563.

It is an arithmetic number, because the mean of its divisors is an integer number (1676423952).

Almost surely, 2^13221021113 is an apocalyptic number.

It is an amenable number.

13221021113 is a deficient number, since it is larger than the sum of its proper divisors (190370503).

13221021113 is an equidigital number, since it uses as much as digits as its factorization.

13221021113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370095.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 13221021113 its reverse (31112012231), we get a palindrome (44333033344).

The spelling of 13221021113 in words is "thirteen billion, two hundred twenty-one million, twenty-one thousand, one hundred thirteen".