13313312221 has 8 divisors (see below), whose sum is σ = 15377943744. Its totient is φ = 11391069120.

The previous prime is 13313312209. The next prime is 13313312231. The reversal of 13313312221 is 12221331331.

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 13313312221 - 2⁵ = 13313312189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13313312192 and 13313312201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13313312231) 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, 35596905 + ... + 35597278.

It is an arithmetic number, because the mean of its divisors is an integer number (1922242968).

Almost surely, 2^13313312221 is an apocalyptic number.

13313312221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13313312221 is a deficient number, since it is larger than the sum of its proper divisors (2064631523).

13313312221 is a wasteful number, since it uses less digits than its factorization.

13313312221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71194211.

The product of its digits is 648, while the sum is 22.

Adding to 13313312221 its reverse (12221331331), we get a palindrome (25534643552).

The spelling of 13313312221 in words is "thirteen billion, three hundred thirteen million, three hundred twelve thousand, two hundred twenty-one".