13321230121 has 8 divisors (see below), whose sum is σ = 13418685000. Its totient is φ = 13223882880.

The previous prime is 13321230119. The next prime is 13321230133. The reversal of 13321230121 is 12103212331.

It can be written as a sum of positive squares in 4 ways, for example, as 287811225 + 13033418896 = 16965^2 + 114164^2 .

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 13321230121 - 2¹ = 13321230119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13321230101) 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, 230455 + ... + 282403.

It is an arithmetic number, because the mean of its divisors is an integer number (1677335625).

Almost surely, 2^13321230121 is an apocalyptic number.

It is an amenable number.

13321230121 is a deficient number, since it is larger than the sum of its proper divisors (97454879).

13321230121 is a wasteful number, since it uses less digits than its factorization.

13321230121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53819.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 13321230121 its reverse (12103212331), we get a palindrome (25424442452).

The spelling of 13321230121 in words is "thirteen billion, three hundred twenty-one million, two hundred thirty thousand, one hundred twenty-one".