13302211221 has 36 divisors (see below), whose sum is σ = 22029949188. Its totient is φ = 7704433152.

The previous prime is 13302211199. The next prime is 13302211229. The reversal of 13302211221 is 12211220331.

It can be written as a sum of positive squares in 6 ways, for example, as 22184100 + 13280027121 = 4710^2 + 115239^2 .

It is not a de Polignac number, because 13302211221 - 2⁵ = 13302211189 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 13302211194 and 13302211203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13302211229) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 231370 + ... + 283083.

It is an arithmetic number, because the mean of its divisors is an integer number (611943033).

Almost surely, 2^13302211221 is an apocalyptic number.

It is an amenable number.

13302211221 is a deficient number, since it is larger than the sum of its proper divisors (8727737967).

13302211221 is a wasteful number, since it uses less digits than its factorization.

13302211221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514502 (or 514486 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 13302211221 its reverse (12211220331), we get a palindrome (25513431552).

The spelling of 13302211221 in words is "thirteen billion, three hundred two million, two hundred eleven thousand, two hundred twenty-one".