13533311021 has 8 divisors (see below), whose sum is σ = 14171622720. Its totient is φ = 12899158272.

The previous prime is 13533310997. The next prime is 13533311063. The reversal of 13533311021 is 12011333531.

13533311021 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 13533311021 - 2¹⁸ = 13533048877 is a prime.

It is a super-2 number, since 2×13533311021² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13533011021) 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, 1033076 + ... + 1046093.

It is an arithmetic number, because the mean of its divisors is an integer number (1771452840).

Almost surely, 2^13533311021 is an apocalyptic number.

It is an amenable number.

13533311021 is a deficient number, since it is larger than the sum of its proper divisors (638311699).

13533311021 is a wasteful number, since it uses less digits than its factorization.

13533311021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2079475.

The product of its (nonzero) digits is 810, while the sum is 23.

Adding to 13533311021 its reverse (12011333531), we get a palindrome (25544644552).

The spelling of 13533311021 in words is "thirteen billion, five hundred thirty-three million, three hundred eleven thousand, twenty-one".