13320234400221 has 128 divisors (see below), whose sum is σ = 23931953971200. Its totient is φ = 7148079912960.

The previous prime is 13320234400211. The next prime is 13320234400241. The reversal of 13320234400221 is 12200443202331.

13320234400221 is a `hidden beast` number, since 1 + 3 + 3 + 2 + 0 + 2 + 34 + 400 + 221 = 666.

It is not a de Polignac number, because 13320234400221 - 2⁶ = 13320234400157 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13320234400211) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 4986982716 + ... + 4986985386.

It is an arithmetic number, because the mean of its divisors is an integer number (186968390400).

Almost surely, 2^{13320234400221} is an apocalyptic number.

It is an amenable number.

13320234400221 is a deficient number, since it is larger than the sum of its proper divisors (10611719570979).

13320234400221 is a wasteful number, since it uses less digits than its factorization.

13320234400221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5536 (or 5530 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 13320234400221 its reverse (12200443202331), we get a palindrome (25520677602552).

The spelling of 13320234400221 in words is "thirteen trillion, three hundred twenty billion, two hundred thirty-four million, four hundred thousand, two hundred twenty-one".