21302331210020 has 24 divisors (see below), whose sum is σ = 51125594904384. Its totient is φ = 7303656414816.

The previous prime is 21302331209983. The next prime is 21302331210067. The reversal of 21302331210020 is 2001213320312.

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 = 21302331209974 and 21302331210001.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76079754182 + ... + 76079754461.

It is an arithmetic number, because the mean of its divisors is an integer number (2130233121016).

Almost surely, 2^{21302331210020} is an apocalyptic number.

21302331210020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21302331210020 is an abundant number, since it is smaller than the sum of its proper divisors (29823263694364).

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

21302331210020 is a wasteful number, since it uses less digits than its factorization.

21302331210020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152159508659 (or 152159508657 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21302331210020 its reverse (2001213320312), we get a palindrome (23303544530332).

The spelling of 21302331210020 in words is "twenty-one trillion, three hundred two billion, three hundred thirty-one million, two hundred ten thousand, twenty".