13221302221 has 8 divisors (see below), whose sum is σ = 13799009664. Its totient is φ = 12643833840.

The previous prime is 13221302207. The next prime is 13221302293. The reversal of 13221302221 is 12220312231.

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 13221302221 - 2¹³ = 13221294029 is a prime.

It is a super-3 number, since 3×13221302221³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13221306221) 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, 58240 + ... + 172726.

It is an arithmetic number, because the mean of its divisors is an integer number (1724876208).

Almost surely, 2^13221302221 is an apocalyptic number.

It is an amenable number.

13221302221 is a deficient number, since it is larger than the sum of its proper divisors (577707443).

13221302221 is a wasteful number, since it uses less digits than its factorization.

13221302221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119531.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 13221302221 its reverse (12220312231), we get a palindrome (25441614452).

The spelling of 13221302221 in words is "thirteen billion, two hundred twenty-one million, three hundred two thousand, two hundred twenty-one".