20200220002021 has 16 divisors (see below), whose sum is σ = 21456193826880. Its totient is φ = 18951787895040.

The previous prime is 20200220002007. The next prime is 20200220002037. The reversal of 20200220002021 is 12020002200202.

It is a cyclic number.

It is not a de Polignac number, because 20200220002021 - 2³³ = 20191630067429 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20200220001992 and 20200220002010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20200220002421) 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 15 ways as a sum of consecutive naturals, for example, 39115590 + ... + 39628648.

It is an arithmetic number, because the mean of its divisors is an integer number (1341012114180).

Almost surely, 2^{20200220002021} is an apocalyptic number.

It is an amenable number.

20200220002021 is a deficient number, since it is larger than the sum of its proper divisors (1255973824859).

20200220002021 is a wasteful number, since it uses less digits than its factorization.

20200220002021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520404.

The product of its (nonzero) digits is 64, while the sum is 13.

Adding to 20200220002021 its reverse (12020002200202), we get a palindrome (32220222202223).

The spelling of 20200220002021 in words is "twenty trillion, two hundred billion, two hundred twenty million, two thousand, twenty-one".