21303021122130 has 128 divisors (see below), whose sum is σ = 55993429094400. Its totient is φ = 5144169254400.

The previous prime is 21303021122083. The next prime is 21303021122233. The reversal of 21303021122130 is 3122112030312.

It is a junction number, because it is equal to n+sod(n) for n = 21303021122097 and 21303021122106.

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, 444353701 + ... + 444401639.

It is an arithmetic number, because the mean of its divisors is an integer number (437448664800).

Almost surely, 2^{21303021122130} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21303021122130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27996714547200).

21303021122130 is an abundant number, since it is smaller than the sum of its proper divisors (34690407972270).

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

21303021122130 is a wasteful number, since it uses less digits than its factorization.

21303021122130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53200.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 21303021122130 its reverse (3122112030312), we get a palindrome (24425133152442).

The spelling of 21303021122130 in words is "twenty-one trillion, three hundred three billion, twenty-one million, one hundred twenty-two thousand, one hundred thirty".