13671730221 has 8 divisors (see below), whose sum is σ = 18229800960. Its totient is φ = 9114073152.

The previous prime is 13671730181. The next prime is 13671730229. The reversal of 13671730221 is 12203717631.

13671730221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 13671730221 - 2¹⁸ = 13671468077 is a prime.

It is a super-3 number, since 3×13671730221³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13671730229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15661 + ... + 166098.

It is an arithmetic number, because the mean of its divisors is an integer number (2278725120).

Almost surely, 2^13671730221 is an apocalyptic number.

It is an amenable number.

13671730221 is a deficient number, since it is larger than the sum of its proper divisors (4558070739).

13671730221 is a wasteful number, since it uses less digits than its factorization.

13671730221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206835.

The product of its (nonzero) digits is 10584, while the sum is 33.

The spelling of 13671730221 in words is "thirteen billion, six hundred seventy-one million, seven hundred thirty thousand, two hundred twenty-one".