2020213011221 has 4 divisors (see below), whose sum is σ = 2023136619744. Its totient is φ = 2017289402700.

The previous prime is 2020213011209. The next prime is 2020213011253. The reversal of 2020213011221 is 1221103120202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2020213011221 is a prime.

It is a super-2 number, since 2×2020213011221² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2020213011221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2020216011221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1461803225 + ... + 1461804606.

It is an arithmetic number, because the mean of its divisors is an integer number (505784154936).

Almost surely, 2^{2020213011221} is an apocalyptic number.

It is an amenable number.

2020213011221 is a deficient number, since it is larger than the sum of its proper divisors (2923608523).

2020213011221 is an equidigital number, since it uses as much as digits as its factorization.

2020213011221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2923608522.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 2020213011221 its reverse (1221103120202), we get a palindrome (3241316131423).

The spelling of 2020213011221 in words is "two trillion, twenty billion, two hundred thirteen million, eleven thousand, two hundred twenty-one".