13650321021 has 8 divisors (see below), whose sum is σ = 18201334080. Its totient is φ = 9099760992.

The previous prime is 13650320953. The next prime is 13650321043. The reversal of 13650321021 is 12012305631.

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

It is not a de Polignac number, because 13650321021 - 2¹³ = 13650312829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13650320982 and 13650321000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13650331021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35280 + ... + 168953.

It is an arithmetic number, because the mean of its divisors is an integer number (2275166760).

Almost surely, 2^13650321021 is an apocalyptic number.

It is an amenable number.

13650321021 is a deficient number, since it is larger than the sum of its proper divisors (4551013059).

13650321021 is a wasteful number, since it uses less digits than its factorization.

13650321021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226515.

The product of its (nonzero) digits is 1080, while the sum is 24.

Adding to 13650321021 its reverse (12012305631), we get a palindrome (25662626652).

The spelling of 13650321021 in words is "thirteen billion, six hundred fifty million, three hundred twenty-one thousand, twenty-one".