21033441104 has 40 divisors (see below), whose sum is σ = 46196939040. Its totient is φ = 9196806528.

The previous prime is 21033441101. The next prime is 21033441167. The reversal of 21033441104 is 40114433012.

It is a self number, because there is not a number n which added to its sum of digits gives 21033441104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21033441101) 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, 2657162 + ... + 2665065.

It is an arithmetic number, because the mean of its divisors is an integer number (1154923476).

Almost surely, 2^21033441104 is an apocalyptic number.

It is an amenable number.

21033441104 is an abundant number, since it is smaller than the sum of its proper divisors (25163497936).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21033441104 is a wasteful number, since it uses less digits than its factorization.

21033441104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5322267 (or 5322261 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 21033441104 its reverse (40114433012), we get a palindrome (61147874116).

The spelling of 21033441104 in words is "twenty-one billion, thirty-three million, four hundred forty-one thousand, one hundred four".