21133033120320 has 448 divisors, whose sum is σ = 74782879948800. Its totient is φ = 5012254679040.

The previous prime is 21133033120247. The next prime is 21133033120363. The reversal of 21133033120320 is 2302133033112.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1647279666 + ... + 1647292494.

Almost surely, 2^{21133033120320} is an apocalyptic number.

21133033120320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21133033120320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37391439974400).

21133033120320 is an abundant number, since it is smaller than the sum of its proper divisors (53649846828480).

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

21133033120320 is a wasteful number, since it uses less digits than its factorization.

21133033120320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16226 (or 16216 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 21133033120320 its reverse (2302133033112), we get a palindrome (23435166153432).

The spelling of 21133033120320 in words is "twenty-one trillion, one hundred thirty-three billion, thirty-three million, one hundred twenty thousand, three hundred twenty".