13521010121 has 8 divisors (see below), whose sum is σ = 13549594464. Its totient is φ = 13492447200.

The previous prime is 13521010099. The next prime is 13521010177. The reversal of 13521010121 is 12101012531.

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 13521010121 - 2³⁰ = 12447268297 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 13521010121.

It is not an unprimeable number, because it can be changed into a prime (13521019121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1984106 + ... + 1990908.

It is an arithmetic number, because the mean of its divisors is an integer number (1693699308).

Almost surely, 2^13521010121 is an apocalyptic number.

It is an amenable number.

13521010121 is a deficient number, since it is larger than the sum of its proper divisors (28584343).

13521010121 is an equidigital number, since it uses as much as digits as its factorization.

13521010121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10711.

The product of its (nonzero) digits is 60, while the sum is 17.

Adding to 13521010121 its reverse (12101012531), we get a palindrome (25622022652).

The spelling of 13521010121 in words is "thirteen billion, five hundred twenty-one million, ten thousand, one hundred twenty-one".