13330044021 has 16 divisors (see below), whose sum is σ = 20342473344. Its totient is φ = 7605908544.

The previous prime is 13330044019. The next prime is 13330044031. The reversal of 13330044021 is 12044003331.

It is not a de Polignac number, because 13330044021 - 2¹ = 13330044019 is a prime.

It is a super-3 number, since 3×13330044021³ (a number of 31 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13330044001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 454590 + ... + 483023.

It is an arithmetic number, because the mean of its divisors is an integer number (1271404584).

Almost surely, 2^13330044021 is an apocalyptic number.

It is an amenable number.

13330044021 is a deficient number, since it is larger than the sum of its proper divisors (7012429323).

13330044021 is an equidigital number, since it uses as much as digits as its factorization.

13330044021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 938300.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 13330044021 its reverse (12044003331), we get a palindrome (25374047352).

The spelling of 13330044021 in words is "thirteen billion, three hundred thirty million, forty-four thousand, twenty-one".