21033150320 has 160 divisors (see below), whose sum is σ = 62129356800. Its totient is φ = 6441845760.

The previous prime is 21033150301. The next prime is 21033150349. The reversal of 21033150320 is 2305133012.

It is a super-3 number, since 3×21033150320³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 21033150292 and 21033150301.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 179081 + ... + 272279.

It is an arithmetic number, because the mean of its divisors is an integer number (388308480).

Almost surely, 2^21033150320 is an apocalyptic number.

21033150320 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 21033150320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31064678400).

21033150320 is an abundant number, since it is smaller than the sum of its proper divisors (41096206480).

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

21033150320 is a wasteful number, since it uses less digits than its factorization.

21033150320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93263 (or 93257 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 20.

Adding to 21033150320 its reverse (2305133012), we get a palindrome (23338283332).

The spelling of 21033150320 in words is "twenty-one billion, thirty-three million, one hundred fifty thousand, three hundred twenty".