20002010001021 has 8 divisors (see below), whose sum is σ = 29632607408960. Its totient is φ = 13334673333996.

The previous prime is 20002010001011. The next prime is 20002010001023. The reversal of 20002010001021 is 12010001020002.

It is not a de Polignac number, because 20002010001021 - 2²⁵ = 20001976446589 is a prime.

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

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20002010000994 and 20002010001012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20002010001023) 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 7 ways as a sum of consecutive naturals, for example, 370407592585 + ... + 370407592638.

It is an arithmetic number, because the mean of its divisors is an integer number (3704075926120).

Almost surely, 2^{20002010001021} is an apocalyptic number.

It is an amenable number.

20002010001021 is a deficient number, since it is larger than the sum of its proper divisors (9630597407939).

20002010001021 is an equidigital number, since it uses as much as digits as its factorization.

20002010001021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 740815185232 (or 740815185226 counting only the distinct ones).

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

Adding to 20002010001021 its reverse (12010001020002), we get a palindrome (32012011021023).

The spelling of 20002010001021 in words is "twenty trillion, two billion, ten million, one thousand, twenty-one".