13351242221 has 8 divisors (see below), whose sum is σ = 14055016320. Its totient is φ = 12647575872.

The previous prime is 13351242209. The next prime is 13351242241. The reversal of 13351242221 is 12224215331.

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

It is not a de Polignac number, because 13351242221 - 2¹⁸ = 13350980077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13351242241) 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, 405836 + ... + 437498.

It is an arithmetic number, because the mean of its divisors is an integer number (1756877040).

Almost surely, 2^13351242221 is an apocalyptic number.

It is an amenable number.

13351242221 is a deficient number, since it is larger than the sum of its proper divisors (703774099).

13351242221 is a wasteful number, since it uses less digits than its factorization.

13351242221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53875.

The product of its digits is 2880, while the sum is 26.

Adding to 13351242221 its reverse (12224215331), we get a palindrome (25575457552).

The spelling of 13351242221 in words is "thirteen billion, three hundred fifty-one million, two hundred forty-two thousand, two hundred twenty-one".