33113304021 has 32 divisors (see below), whose sum is σ = 53438054400. Its totient is φ = 17804987136.

The previous prime is 33113303999. The next prime is 33113304023. The reversal of 33113304021 is 12040331133.

It is not a de Polignac number, because 33113304021 - 2¹⁰ = 33113302997 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33113304023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2580780 + ... + 2593578.

It is an arithmetic number, because the mean of its divisors is an integer number (1669939200).

Almost surely, 2^33113304021 is an apocalyptic number.

It is an amenable number.

33113304021 is a deficient number, since it is larger than the sum of its proper divisors (20324750379).

33113304021 is a wasteful number, since it uses less digits than its factorization.

33113304021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20073.

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

Adding to 33113304021 its reverse (12040331133), we get a palindrome (45153635154).

The spelling of 33113304021 in words is "thirty-three billion, one hundred thirteen million, three hundred four thousand, twenty-one".