2220020212021 has 4 divisors (see below), whose sum is σ = 2220554003200. Its totient is φ = 2219486420844.

The previous prime is 2220020212019. The next prime is 2220020212049. The reversal of 2220020212021 is 1202120200222.

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 not a de Polignac number, because 2220020212021 - 2¹ = 2220020212019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2220020211986 and 2220020212004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2220020212621) 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, 266889351 + ... + 266897668.

It is an arithmetic number, because the mean of its divisors is an integer number (555138500800).

Almost surely, 2^{2220020212021} is an apocalyptic number.

It is an amenable number.

2220020212021 is a deficient number, since it is larger than the sum of its proper divisors (533791179).

2220020212021 is an equidigital number, since it uses as much as digits as its factorization.

2220020212021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533791178.

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

Adding to 2220020212021 its reverse (1202120200222), we get a palindrome (3422140412243).

The spelling of 2220020212021 in words is "two trillion, two hundred twenty billion, twenty million, two hundred twelve thousand, twenty-one".