13415043023221 has 24 divisors (see below), whose sum is σ = 16438048001280. Its totient is φ = 10885815484992.

The previous prime is 13415043023189. The next prime is 13415043023233. The reversal of 13415043023221 is 12232034051431.

It is not a de Polignac number, because 13415043023221 - 2⁵ = 13415043023189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13415043023621) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3693541 + ... + 6361786.

It is an arithmetic number, because the mean of its divisors is an integer number (684918666720).

Almost surely, 2^{13415043023221} is an apocalyptic number.

It is an amenable number.

13415043023221 is a deficient number, since it is larger than the sum of its proper divisors (3023004978059).

13415043023221 is a wasteful number, since it uses less digits than its factorization.

13415043023221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10056793 (or 10056786 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

Adding to 13415043023221 its reverse (12232034051431), we get a palindrome (25647077074652).

The spelling of 13415043023221 in words is "thirteen trillion, four hundred fifteen billion, forty-three million, twenty-three thousand, two hundred twenty-one".