13530040221 has 8 divisors (see below), whose sum is σ = 18480055104. Its totient is φ = 8800026080.

The previous prime is 13530040217. The next prime is 13530040229. The reversal of 13530040221 is 12204003531.

13530040221 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 a cyclic number.

It is not a de Polignac number, because 13530040221 - 2² = 13530040217 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13530040229) 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, 55000041 + ... + 55000286.

It is an arithmetic number, because the mean of its divisors is an integer number (2310006888).

Almost surely, 2^13530040221 is an apocalyptic number.

It is an amenable number.

13530040221 is a deficient number, since it is larger than the sum of its proper divisors (4950014883).

13530040221 is a wasteful number, since it uses less digits than its factorization.

13530040221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110000371.

The product of its (nonzero) digits is 720, while the sum is 21.

Adding to 13530040221 its reverse (12204003531), we get a palindrome (25734043752).

The spelling of 13530040221 in words is "thirteen billion, five hundred thirty million, forty thousand, two hundred twenty-one".