13120132521 has 8 divisors (see below), whose sum is σ = 17533912480. Its totient is φ = 8726553792.

The previous prime is 13120132513. The next prime is 13120132651. The reversal of 13120132521 is 12523102131.

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

It is not a de Polignac number, because 13120132521 - 2³ = 13120132513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13120136521) 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, 5048791 + ... + 5051388.

It is an arithmetic number, because the mean of its divisors is an integer number (2191739060).

Almost surely, 2^13120132521 is an apocalyptic number.

It is an amenable number.

13120132521 is a deficient number, since it is larger than the sum of its proper divisors (4413779959).

13120132521 is a wasteful number, since it uses less digits than its factorization.

13120132521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10100615.

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

Adding to 13120132521 its reverse (12523102131), we get a palindrome (25643234652).

The spelling of 13120132521 in words is "thirteen billion, one hundred twenty million, one hundred thirty-two thousand, five hundred twenty-one".