13454547221 has 8 divisors (see below), whose sum is σ = 13855141344. Its totient is φ = 13057939440.

The previous prime is 13454547203. The next prime is 13454547233. The reversal of 13454547221 is 12274545431.

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

It is a cyclic number.

It is not a de Polignac number, because 13454547221 - 2¹⁰ = 13454546197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13454547241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 989735 + ... + 1003236.

It is an arithmetic number, because the mean of its divisors is an integer number (1731892668).

Almost surely, 2^13454547221 is an apocalyptic number.

It is an amenable number.

13454547221 is a deficient number, since it is larger than the sum of its proper divisors (400594123).

13454547221 is a wasteful number, since it uses less digits than its factorization.

13454547221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1993171.

The product of its digits is 134400, while the sum is 38.

The spelling of 13454547221 in words is "thirteen billion, four hundred fifty-four million, five hundred forty-seven thousand, two hundred twenty-one".