13333332122221 has 8 divisors (see below), whose sum is σ = 13432664509560. Its totient is φ = 13234028848128.

The previous prime is 13333332122207. The next prime is 13333332122263. The reversal of 13333332122221 is 12222123333331.

It can be written as a sum of positive squares in 4 ways, for example, as 3839914584900 + 9493417537321 = 1959570^2 + 3081139^2 .

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 13333332122221 - 2¹⁷ = 13333331991149 is a prime.

It is a super-3 number, since 3×13333332122221³ (a number of 40 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 (13333332122281) 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, 6358506 + ... + 8191291.

It is an arithmetic number, because the mean of its divisors is an integer number (1679083063695).

Almost surely, 2^{13333332122221} is an apocalyptic number.

It is an amenable number.

13333332122221 is a deficient number, since it is larger than the sum of its proper divisors (99332387339).

13333332122221 is a wasteful number, since it uses less digits than its factorization.

13333332122221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14556623.

The product of its digits is 23328, while the sum is 31.

Adding to 13333332122221 its reverse (12222123333331), we get a palindrome (25555455455552).

The spelling of 13333332122221 in words is "thirteen trillion, three hundred thirty-three billion, three hundred thirty-two million, one hundred twenty-two thousand, two hundred twenty-one".