13320000123021 has 48 divisors (see below), whose sum is σ = 19792561986288. Its totient is φ = 8626824806400.

The previous prime is 13320000122993. The next prime is 13320000123041. The reversal of 13320000123021 is 12032100002331.

It can be written as a sum of positive squares in 8 ways, for example, as 3128971832100 + 10191028290921 = 1768890^2 + 3192339^2 .

It is not a de Polignac number, because 13320000123021 - 2¹⁹ = 13319999598733 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13320000122985 and 13320000123003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13320000123041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 305055931 + ... + 305099591.

It is an arithmetic number, because the mean of its divisors is an integer number (412345041381).

Almost surely, 2^{13320000123021} is an apocalyptic number.

It is an amenable number.

13320000123021 is a deficient number, since it is larger than the sum of its proper divisors (6472561863267).

13320000123021 is a wasteful number, since it uses less digits than its factorization.

13320000123021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47182 (or 47179 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 13320000123021 its reverse (12032100002331), we get a palindrome (25352100125352).

The spelling of 13320000123021 in words is "thirteen trillion, three hundred twenty billion, one hundred twenty-three thousand, twenty-one".