13215225131511 has 8 divisors (see below), whose sum is σ = 18975707881200. Its totient is φ = 8132446234752.

The previous prime is 13215225131509. The next prime is 13215225131513. The reversal of 13215225131511 is 11513152251231.

13215225131511 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (13215225131509) and next prime (13215225131513).

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

It is not a de Polignac number, because 13215225131511 - 2¹ = 13215225131509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13215225131513) 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, 169425963186 + ... + 169425963263.

It is an arithmetic number, because the mean of its divisors is an integer number (2371963485150).

Almost surely, 2^{13215225131511} is an apocalyptic number.

13215225131511 is a deficient number, since it is larger than the sum of its proper divisors (5760482749689).

13215225131511 is a wasteful number, since it uses less digits than its factorization.

13215225131511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338851926465.

The product of its digits is 9000, while the sum is 33.

Adding to 13215225131511 its reverse (11513152251231), we get a palindrome (24728377382742).

The spelling of 13215225131511 in words is "thirteen trillion, two hundred fifteen billion, two hundred twenty-five million, one hundred thirty-one thousand, five hundred eleven".