2020212011221 has 16 divisors (see below), whose sum is σ = 2151075764160. Its totient is φ = 1891863388800.

The previous prime is 2020212011189. The next prime is 2020212011291. The reversal of 2020212011221 is 1221102120202.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2020212011221 - 2⁵ = 2020212011189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2020212011195 and 2020212011204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2020212011291) 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, 330910 + ... + 2037136.

It is an arithmetic number, because the mean of its divisors is an integer number (134442235260).

Almost surely, 2^{2020212011221} is an apocalyptic number.

It is an amenable number.

2020212011221 is a deficient number, since it is larger than the sum of its proper divisors (130863752939).

2020212011221 is a wasteful number, since it uses less digits than its factorization.

2020212011221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1706964.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2020212011221 its reverse (1221102120202), we get a palindrome (3241314131423).

The spelling of 2020212011221 in words is "two trillion, twenty billion, two hundred twelve million, eleven thousand, two hundred twenty-one".