33441020021 has 4 divisors (see below), whose sum is σ = 33487531200. Its totient is φ = 33394508844.

The previous prime is 33441019897. The next prime is 33441020027. The reversal of 33441020021 is 12002014433.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12002014433 = 17 ⋅706000849.

It is a cyclic number.

It is not a de Polignac number, because 33441020021 - 2²⁶ = 33373911157 is a prime.

It is a super-2 number, since 2×33441020021² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 33441019975 and 33441020002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33441020027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23254511 + ... + 23255948.

It is an arithmetic number, because the mean of its divisors is an integer number (8371882800).

Almost surely, 2^33441020021 is an apocalyptic number.

It is an amenable number.

33441020021 is a deficient number, since it is larger than the sum of its proper divisors (46511179).

33441020021 is an equidigital number, since it uses as much as digits as its factorization.

33441020021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46511178.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 33441020021 its reverse (12002014433), we get a palindrome (45443034454).

The spelling of 33441020021 in words is "thirty-three billion, four hundred forty-one million, twenty thousand, twenty-one".