2020220210221 has 8 divisors (see below), whose sum is σ = 2077221409560. Its totient is φ = 1963918412352.

The previous prime is 2020220210219. The next prime is 2020220210231. The reversal of 2020220210221 is 1220120220202.

It can be written as a sum of positive squares in 4 ways, for example, as 728556138025 + 1291664072196 = 853555^2 + 1136514^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2020220210221 - 2¹ = 2020220210219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2020220210195 and 2020220210204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2020220210231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 174844510 + ... + 174856063.

It is an arithmetic number, because the mean of its divisors is an integer number (259652676195).

Almost surely, 2^{2020220210221} is an apocalyptic number.

It is an amenable number.

2020220210221 is a deficient number, since it is larger than the sum of its proper divisors (57001199339).

2020220210221 is a wasteful number, since it uses less digits than its factorization.

2020220210221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349700735.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 2020220210221 its reverse (1220120220202), we get a palindrome (3240340430423).

The spelling of 2020220210221 in words is "two trillion, twenty billion, two hundred twenty million, two hundred ten thousand, two hundred twenty-one".