2020201221 has 16 divisors (see below), whose sum is σ = 2775287744. Its totient is φ = 1306191744.

The previous prime is 2020201097. The next prime is 2020201223. The reversal of 2020201221 is 1221020202.

It is not a de Polignac number, because 2020201221 - 2⁹ = 2020200709 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2020201197 and 2020201206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2020201223) 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, 5670 + ... + 63816.

It is an arithmetic number, because the mean of its divisors is an integer number (173455484).

Almost surely, 2^2020201221 is an apocalyptic number.

It is an amenable number.

2020201221 is a deficient number, since it is larger than the sum of its proper divisors (755086523).

2020201221 is a wasteful number, since it uses less digits than its factorization.

2020201221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58500.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 2020201221 is about 44946.6486069874. The cubic root of 2020201221 is about 1264.1488378669.

Adding to 2020201221 its reverse (1221020202), we get a palindrome (3241221423).

The spelling of 2020201221 in words is "two billion, twenty million, two hundred one thousand, two hundred twenty-one".