2020021111021 has 4 divisors (see below), whose sum is σ = 2107848115872. Its totient is φ = 1932194106172.

The previous prime is 2020021110983. The next prime is 2020021111127. The reversal of 2020021111021 is 1201111200202.

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 2020021111021 - 2⁹ = 2020021110509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2020021110992 and 2020021111010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2020021151021) 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 3 ways as a sum of consecutive naturals, for example, 43913502391 + ... + 43913502436.

It is an arithmetic number, because the mean of its divisors is an integer number (526962028968).

Almost surely, 2^{2020021111021} is an apocalyptic number.

It is an amenable number.

2020021111021 is a deficient number, since it is larger than the sum of its proper divisors (87827004851).

2020021111021 is an equidigital number, since it uses as much as digits as its factorization.

2020021111021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87827004850.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 2020021111021 its reverse (1201111200202), we get a palindrome (3221132311223).

The spelling of 2020021111021 in words is "two trillion, twenty billion, twenty-one million, one hundred eleven thousand, twenty-one".