13221132011321 has 8 divisors (see below), whose sum is σ = 14239920045960. Its totient is φ = 12202597959552.

The previous prime is 13221132011267. The next prime is 13221132011333. The reversal of 13221132011321 is 12311023112231.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 91089879721 + 13130042131600 = 301811^2 + 3623540^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-13221132011321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13221132011341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63387590 + ... + 63595823.

It is an arithmetic number, because the mean of its divisors is an integer number (1779990005745).

Almost surely, 2^{13221132011321} is an apocalyptic number.

It is an amenable number.

13221132011321 is a deficient number, since it is larger than the sum of its proper divisors (1018788034639).

13221132011321 is a wasteful number, since it uses less digits than its factorization.

13221132011321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126991435.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 13221132011321 its reverse (12311023112231), we get a palindrome (25532155123552).

The spelling of 13221132011321 in words is "thirteen trillion, two hundred twenty-one billion, one hundred thirty-two million, eleven thousand, three hundred twenty-one".