13530122521 has 8 divisors (see below), whose sum is σ = 14007265920. Its totient is φ = 13053685008.

The previous prime is 13530122497. The next prime is 13530122533. The reversal of 13530122521 is 12522103531.

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 13530122521 - 2¹³ = 13530114329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13530122821) 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, 137311 + ... + 214276.

It is an arithmetic number, because the mean of its divisors is an integer number (1750908240).

Almost surely, 2^13530122521 is an apocalyptic number.

It is an amenable number.

13530122521 is a deficient number, since it is larger than the sum of its proper divisors (477143399).

13530122521 is a wasteful number, since it uses less digits than its factorization.

13530122521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352943.

The product of its (nonzero) digits is 1800, while the sum is 25.

The spelling of 13530122521 in words is "thirteen billion, five hundred thirty million, one hundred twenty-two thousand, five hundred twenty-one".