2020010010021 has 12 divisors (see below), whose sum is σ = 2918523748140. Its totient is φ = 1346335719360.

The previous prime is 2020010009999. The next prime is 2020010010089. The reversal of 2020010010021 is 1200100100202.

It can be written as a sum of positive squares in 2 ways, for example, as 1343487309921 + 676522700100 = 1159089^2 + 822510^2 .

It is not a de Polignac number, because 2020010010021 - 2⁶ = 2020010009957 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 2020010009985 and 2020010010012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2020010010521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28097160 + ... + 28168961.

It is an arithmetic number, because the mean of its divisors is an integer number (243210312345).

Almost surely, 2^{2020010010021} is an apocalyptic number.

It is an amenable number.

2020010010021 is a deficient number, since it is larger than the sum of its proper divisors (898513738119).

2020010010021 is a wasteful number, since it uses less digits than its factorization.

2020010010021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56270116 (or 56270113 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 2020010010021 its reverse (1200100100202), we get a palindrome (3220110110223).

The spelling of 2020010010021 in words is "two trillion, twenty billion, ten million, ten thousand, twenty-one".