21020302200220 has 12 divisors (see below), whose sum is σ = 44142634620504. Its totient is φ = 8408120880080.

The previous prime is 21020302200203. The next prime is 21020302200229. The reversal of 21020302200220 is 2200220302012.

It is a junction number, because it is equal to n+sod(n) for n = 21020302200194 and 21020302200203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21020302200229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 525507554986 + ... + 525507555025.

It is an arithmetic number, because the mean of its divisors is an integer number (3678552885042).

Almost surely, 2^{21020302200220} is an apocalyptic number.

21020302200220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21020302200220 is an abundant number, since it is smaller than the sum of its proper divisors (23122332420284).

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

21020302200220 is a wasteful number, since it uses less digits than its factorization.

21020302200220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1051015110020 (or 1051015110018 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

Adding to 21020302200220 its reverse (2200220302012), we get a palindrome (23220522502232).

The spelling of 21020302200220 in words is "twenty-one trillion, twenty billion, three hundred two million, two hundred thousand, two hundred twenty".