13122130521 has 8 divisors (see below), whose sum is σ = 17508073984. Its totient is φ = 8742137040.

The previous prime is 13122130519. The next prime is 13122130547. The reversal of 13122130521 is 12503122131.

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

It is not a de Polignac number, because 13122130521 - 2¹ = 13122130519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13122130501) 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, 1482346 + ... + 1491171.

It is an arithmetic number, because the mean of its divisors is an integer number (2188509248).

Almost surely, 2^13122130521 is an apocalyptic number.

It is an amenable number.

13122130521 is a deficient number, since it is larger than the sum of its proper divisors (4385943463).

13122130521 is a wasteful number, since it uses less digits than its factorization.

13122130521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2974991.

The product of its (nonzero) digits is 360, while the sum is 21.

Adding to 13122130521 its reverse (12503122131), we get a palindrome (25625252652).

The spelling of 13122130521 in words is "thirteen billion, one hundred twenty-two million, one hundred thirty thousand, five hundred twenty-one".