13332222221 has 4 divisors (see below), whose sum is σ = 13335770844. Its totient is φ = 13328673600.

The previous prime is 13332222209. The next prime is 13332222223. The reversal of 13332222221 is 12222223331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12222223331 = 59263 ⋅206237.

It can be written as a sum of positive squares in 2 ways, for example, as 9849570025 + 3482652196 = 99245^2 + 59014^2 .

It is a cyclic number.

It is not a de Polignac number, because 13332222221 - 2¹⁰ = 13332221197 is a prime.

It is a super-3 number, since 3×13332222221³ (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 (13332222223) 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, 1768670 + ... + 1776191.

It is an arithmetic number, because the mean of its divisors is an integer number (3333942711).

Almost surely, 2^13332222221 is an apocalyptic number.

It is an amenable number.

13332222221 is a deficient number, since it is larger than the sum of its proper divisors (3548623).

13332222221 is an equidigital number, since it uses as much as digits as its factorization.

13332222221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3548622.

The product of its digits is 1728, while the sum is 23.

Adding to 13332222221 its reverse (12222223331), we get a palindrome (25554445552).

The spelling of 13332222221 in words is "thirteen billion, three hundred thirty-two million, two hundred twenty-two thousand, two hundred twenty-one".