13502225321 has 8 divisors (see below), whose sum is σ = 14542181640. Its totient is φ = 12462458112.

The previous prime is 13502225287. The next prime is 13502225323. The reversal of 13502225321 is 12352220531.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 645160000 + 12857065321 = 25400^2 + 113389^2 .

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

It is not a de Polignac number, because 13502225321 - 2⁶ = 13502225257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13502225323) 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, 124031 + ... + 205883.

It is an arithmetic number, because the mean of its divisors is an integer number (1817772705).

Almost surely, 2^13502225321 is an apocalyptic number.

It is an amenable number.

13502225321 is a deficient number, since it is larger than the sum of its proper divisors (1039956319).

13502225321 is a wasteful number, since it uses less digits than its factorization.

13502225321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94555.

The product of its (nonzero) digits is 3600, while the sum is 26.

Adding to 13502225321 its reverse (12352220531), we get a palindrome (25854445852).

The spelling of 13502225321 in words is "thirteen billion, five hundred two million, two hundred twenty-five thousand, three hundred twenty-one".