13220603421 has 8 divisors (see below), whose sum is σ = 17674731360. Its totient is φ = 8790105552.

The previous prime is 13220603377. The next prime is 13220603437. The reversal of 13220603421 is 12430602231.

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

It is not a de Polignac number, because 13220603421 - 2²² = 13216409117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13220603391 and 13220603400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13220603441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5906211 + ... + 5908448.

It is an arithmetic number, because the mean of its divisors is an integer number (2209341420).

Almost surely, 2^13220603421 is an apocalyptic number.

It is an amenable number.

13220603421 is a deficient number, since it is larger than the sum of its proper divisors (4454127939).

13220603421 is a wasteful number, since it uses less digits than its factorization.

13220603421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11815035.

The product of its (nonzero) digits is 1728, while the sum is 24.

The spelling of 13220603421 in words is "thirteen billion, two hundred twenty million, six hundred three thousand, four hundred twenty-one".