20200020002221 has 16 divisors (see below), whose sum is σ = 21089859269760. Its totient is φ = 19311147535680.

The previous prime is 20200020002191. The next prime is 20200020002237. The reversal of 20200020002221 is 12220002000202.

It is a cyclic number.

It is not a de Polignac number, because 20200020002221 - 2¹⁷ = 20200019871149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20200020002251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 652840611 + ... + 652871551.

It is an arithmetic number, because the mean of its divisors is an integer number (1318116204360).

Almost surely, 2^{20200020002221} is an apocalyptic number.

It is an amenable number.

20200020002221 is a deficient number, since it is larger than the sum of its proper divisors (889839267539).

20200020002221 is a wasteful number, since it uses less digits than its factorization.

20200020002221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45636.

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

Adding to 20200020002221 its reverse (12220002000202), we get a palindrome (32420022002423).

The spelling of 20200020002221 in words is "twenty trillion, two hundred billion, twenty million, two thousand, two hundred twenty-one".