20021343301300 has 144 divisors (see below), whose sum is σ = 47699297174592. Its totient is φ = 7233947929600.

The previous prime is 20021343301279. The next prime is 20021343301313. The reversal of 20021343301300 is 310334312002.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 317198544 + ... + 317261656.

It is an arithmetic number, because the mean of its divisors is an integer number (331245119268).

Almost surely, 2^{20021343301300} is an apocalyptic number.

20021343301300 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 20021343301300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23849648587296).

20021343301300 is an abundant number, since it is smaller than the sum of its proper divisors (27677953873292).

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

20021343301300 is a wasteful number, since it uses less digits than its factorization.

20021343301300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64978 (or 64971 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 20021343301300 its reverse (310334312002), we get a palindrome (20331677613302).

The spelling of 20021343301300 in words is "twenty trillion, twenty-one billion, three hundred forty-three million, three hundred one thousand, three hundred".