13001230021 has 8 divisors (see below), whose sum is σ = 14006016864. Its totient is φ = 11997113520.

The previous prime is 13001230019. The next prime is 13001230043. The reversal of 13001230021 is 12003210031.

13001230021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 13001230021 - 2¹ = 13001230019 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13001229983 and 13001230010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13001230001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126931 + ... + 205216.

It is an arithmetic number, because the mean of its divisors is an integer number (1750752108).

Almost surely, 2^13001230021 is an apocalyptic number.

It is an amenable number.

13001230021 is a deficient number, since it is larger than the sum of its proper divisors (1004786843).

13001230021 is a wasteful number, since it uses less digits than its factorization.

13001230021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335171.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 13001230021 its reverse (12003210031), we get a palindrome (25004440052).

It can be divided in two parts, 1300 and 1230021, that added together give a palindrome (1231321).

The spelling of 13001230021 in words is "thirteen billion, one million, two hundred thirty thousand, twenty-one".