13001233120221 has 16 divisors (see below), whose sum is σ = 18088933547520. Its totient is φ = 8290521610800.

The previous prime is 13001233120219. The next prime is 13001233120231. The reversal of 13001233120221 is 12202133210031.

It is not a de Polignac number, because 13001233120221 - 2¹ = 13001233120219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13001233120231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3577246 + ... + 6228896.

It is an arithmetic number, because the mean of its divisors is an integer number (1130558346720).

Almost surely, 2^{13001233120221} is an apocalyptic number.

It is an amenable number.

13001233120221 is a deficient number, since it is larger than the sum of its proper divisors (5087700427299).

13001233120221 is a wasteful number, since it uses less digits than its factorization.

13001233120221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2722736.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 13001233120221 its reverse (12202133210031), we get a palindrome (25203366330252).

The spelling of 13001233120221 in words is "thirteen trillion, one billion, two hundred thirty-three million, one hundred twenty thousand, two hundred twenty-one".