2020001022021 has 32 divisors (see below), whose sum is σ = 2833874068480. Its totient is φ = 1278271756800.

The previous prime is 2020001021999. The next prime is 2020001022059. The reversal of 2020001022021 is 1202201000202.

It is not a de Polignac number, because 2020001022021 - 2²⁶ = 2019933913157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2020001021988 and 2020001022006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2020001022071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 406875 + ... + 2050743.

It is an arithmetic number, because the mean of its divisors is an integer number (88558564640).

Almost surely, 2^{2020001022021} is an apocalyptic number.

It is an amenable number.

2020001022021 is a deficient number, since it is larger than the sum of its proper divisors (813873046459).

2020001022021 is a wasteful number, since it uses less digits than its factorization.

2020001022021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1644157.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 2020001022021 its reverse (1202201000202), we get a palindrome (3222202022223).

The spelling of 2020001022021 in words is "two trillion, twenty billion, one million, twenty-two thousand, twenty-one".