33504411021 has 4 divisors (see below), whose sum is σ = 44672548032. Its totient is φ = 22336274012.

The previous prime is 33504411013. The next prime is 33504411041. The reversal of 33504411021 is 12011440533.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 33504411021 - 2³ = 33504411013 is a prime.

It is a super-2 number, since 2×33504411021² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 33504410982 and 33504411000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33504411011) 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 3 ways as a sum of consecutive naturals, for example, 5584068501 + ... + 5584068506.

It is an arithmetic number, because the mean of its divisors is an integer number (11168137008).

Almost surely, 2^33504411021 is an apocalyptic number.

It is an amenable number.

33504411021 is a deficient number, since it is larger than the sum of its proper divisors (11168137011).

33504411021 is a wasteful number, since it uses less digits than its factorization.

33504411021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11168137010.

The product of its (nonzero) digits is 1440, while the sum is 24.

Adding to 33504411021 its reverse (12011440533), we get a palindrome (45515851554).

The spelling of 33504411021 in words is "thirty-three billion, five hundred four million, four hundred eleven thousand, twenty-one".