2010020001021 has 12 divisors (see below), whose sum is σ = 3010894158272. Its totient is φ = 1340013333852.

The previous prime is 2010020000969. The next prime is 2010020001023. The reversal of 2010020001021 is 1201000200102.

It is not a de Polignac number, because 2010020001021 - 2¹⁹ = 2010019476733 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 = 2010020000994 and 2010020001012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2010020001023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4135843381 + ... + 4135843866.

Almost surely, 2^{2010020001021} is an apocalyptic number.

It is an amenable number.

2010020001021 is a deficient number, since it is larger than the sum of its proper divisors (1000874157251).

2010020001021 is an frugal number, since it uses more digits than its factorization.

2010020001021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8271687262 (or 8271687250 counting only the distinct ones).

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

Adding to 2010020001021 its reverse (1201000200102), we get a palindrome (3211020201123).

The spelling of 2010020001021 in words is "two trillion, ten billion, twenty million, one thousand, twenty-one".