2020221011021 has 4 divisors (see below), whose sum is σ = 2020246093632. Its totient is φ = 2020195928412.

The previous prime is 2020221010999. The next prime is 2020221011033. The reversal of 2020221011021 is 1201101220202.

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 2020221011021 - 2⁶ = 2020221010957 is a prime.

It is a super-2 number, since 2×2020221011021² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2020221010987 and 2020221011005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2020221061021) 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, 12420101 + ... + 12581706.

It is an arithmetic number, because the mean of its divisors is an integer number (505061523408).

Almost surely, 2^{2020221011021} is an apocalyptic number.

It is an amenable number.

2020221011021 is a deficient number, since it is larger than the sum of its proper divisors (25082611).

2020221011021 is an equidigital number, since it uses as much as digits as its factorization.

2020221011021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25082610.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2020221011021 its reverse (1201101220202), we get a palindrome (3221322231223).

The spelling of 2020221011021 in words is "two trillion, twenty billion, two hundred twenty-one million, eleven thousand, twenty-one".