21033101130 has 64 divisors (see below), whose sum is σ = 51627663360. Its totient is φ = 5481591104.

The previous prime is 21033101113. The next prime is 21033101143. The reversal of 21033101130 is 3110133012.

It is a Harshad number since it is a multiple of its sum of digits (15).

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 31 ways as a sum of consecutive naturals, for example, 1003417 + ... + 1024163.

It is an arithmetic number, because the mean of its divisors is an integer number (806682240).

Almost surely, 2^21033101130 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21033101130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25813831680).

21033101130 is an abundant number, since it is smaller than the sum of its proper divisors (30594562230).

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

21033101130 is a wasteful number, since it uses less digits than its factorization.

21033101130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21523.

The product of its (nonzero) digits is 54, while the sum is 15.

Adding to 21033101130 its reverse (3110133012), we get a palindrome (24143234142).

The spelling of 21033101130 in words is "twenty-one billion, thirty-three million, one hundred one thousand, one hundred thirty".