21100241433304 has 64 divisors (see below), whose sum is σ = 45063274890240. Its totient is φ = 9168480034560.

The previous prime is 21100241433269. The next prime is 21100241433377. The reversal of 21100241433304 is 40333414200112.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 208017 + ... + 6499519.

It is an arithmetic number, because the mean of its divisors is an integer number (704113670160).

Almost surely, 2^{21100241433304} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21100241433304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22531637445120).

21100241433304 is an abundant number, since it is smaller than the sum of its proper divisors (23963033456936).

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

21100241433304 is a wasteful number, since it uses less digits than its factorization.

21100241433304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6293200 (or 6293196 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 21100241433304 its reverse (40333414200112), we get a palindrome (61433655633416).

The spelling of 21100241433304 in words is "twenty-one trillion, one hundred billion, two hundred forty-one million, four hundred thirty-three thousand, three hundred four".