13001515021 has 16 divisors (see below), whose sum is σ = 14436933120. Its totient is φ = 11609365680.

The previous prime is 13001515001. The next prime is 13001515039. The reversal of 13001515021 is 12051510031.

It is not a de Polignac number, because 13001515021 - 2²³ = 12993126413 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 13001515021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13001515001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 230320 + ... + 281158.

It is an arithmetic number, because the mean of its divisors is an integer number (902308320).

Almost surely, 2^13001515021 is an apocalyptic number.

13001515021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13001515021 is a deficient number, since it is larger than the sum of its proper divisors (1435418099).

13001515021 is a wasteful number, since it uses less digits than its factorization.

13001515021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51264.

The product of its (nonzero) digits is 150, while the sum is 19.

The spelling of 13001515021 in words is "thirteen billion, one million, five hundred fifteen thousand, twenty-one".