13542530221 has 8 divisors (see below), whose sum is σ = 14911742304. Its totient is φ = 12196330320.

The previous prime is 13542530219. The next prime is 13542530237. The reversal of 13542530221 is 12203524531.

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 13542530221 - 2¹ = 13542530219 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13542530221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13542530291) 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, 5751810 + ... + 5754163.

It is an arithmetic number, because the mean of its divisors is an integer number (1863967788).

Almost surely, 2^13542530221 is an apocalyptic number.

13542530221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13542530221 is a deficient number, since it is larger than the sum of its proper divisors (1369212083).

13542530221 is a wasteful number, since it uses less digits than its factorization.

13542530221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11506091.

The product of its (nonzero) digits is 7200, while the sum is 28.

The spelling of 13542530221 in words is "thirteen billion, five hundred forty-two million, five hundred thirty thousand, two hundred twenty-one".