21303000002020 has 96 divisors (see below), whose sum is σ = 48860950118400. Its totient is φ = 7737389869440.

The previous prime is 21303000001973. The next prime is 21303000002027. The reversal of 21303000002020 is 2020000030312.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (21303000002027) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 721460497 + ... + 721490023.

It is an arithmetic number, because the mean of its divisors is an integer number (508968230400).

Almost surely, 2^{21303000002020} is an apocalyptic number.

21303000002020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21303000002020 is an abundant number, since it is smaller than the sum of its proper divisors (27557950116380).

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

21303000002020 is a wasteful number, since it uses less digits than its factorization.

21303000002020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33313 (or 33311 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

Adding to 21303000002020 its reverse (2020000030312), we get a palindrome (23323000032332).

The spelling of 21303000002020 in words is "twenty-one trillion, three hundred three billion, two thousand, twenty".