13363020021 has 16 divisors (see below), whose sum is σ = 19385745344. Its totient is φ = 8138617344.

The previous prime is 13363020007. The next prime is 13363020049. The reversal of 13363020021 is 12002036331.

It is not a de Polignac number, because 13363020021 - 2¹⁷ = 13362888949 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 13363020021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13363020071) 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 15 ways as a sum of consecutive naturals, for example, 1762411 + ... + 1769976.

It is an arithmetic number, because the mean of its divisors is an integer number (1211609084).

Almost surely, 2^13363020021 is an apocalyptic number.

It is an amenable number.

13363020021 is a deficient number, since it is larger than the sum of its proper divisors (6022725323).

13363020021 is a wasteful number, since it uses less digits than its factorization.

13363020021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3532500.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 13363020021 its reverse (12002036331), we get a palindrome (25365056352).

The spelling of 13363020021 in words is "thirteen billion, three hundred sixty-three million, twenty thousand, twenty-one".