2010200021 has 4 divisors (see below), whose sum is σ = 2010321600. Its totient is φ = 2010078444.

The previous prime is 2010200009. The next prime is 2010200107. The reversal of 2010200021 is 1200020102.

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 2010200021 - 2⁶ = 2010199957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2010199981 and 2010200008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2010202021) 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, 31181 + ... + 70658.

It is an arithmetic number, because the mean of its divisors is an integer number (502580400).

Almost surely, 2^2010200021 is an apocalyptic number.

It is an amenable number.

2010200021 is a deficient number, since it is larger than the sum of its proper divisors (121579).

2010200021 is a wasteful number, since it uses less digits than its factorization.

2010200021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121578.

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

The square root of 2010200021 is about 44835.2542203119. The cubic root of 2010200021 is about 1262.0592891844.

Adding to 2010200021 its reverse (1200020102), we get a palindrome (3210220123).

The spelling of 2010200021 in words is "two billion, ten million, two hundred thousand, twenty-one".