2010000021 has 8 divisors (see below), whose sum is σ = 2699562624. Its totient is φ = 1330218720.

The previous prime is 2010000001. The next prime is 2010000059. The reversal of 2010000021 is 1200000102.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2010000021 - 2¹⁴ = 2009983637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2009999964 and 2010000009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2010000001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2444845 + ... + 2445666.

It is an arithmetic number, because the mean of its divisors is an integer number (337445328).

Almost surely, 2^2010000021 is an apocalyptic number.

It is an amenable number.

2010000021 is a deficient number, since it is larger than the sum of its proper divisors (689562603).

2010000021 is a wasteful number, since it uses less digits than its factorization.

2010000021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4890651.

The product of its (nonzero) digits is 4, while the sum is 6.

The square root of 2010000021 is about 44833.0237771221. The cubic root of 2010000021 is about 1262.0174326151.

Adding to 2010000021 its reverse (1200000102), we get a palindrome (3210000123).

The spelling of 2010000021 in words is "two billion, ten million, twenty-one", and thus it is an aban number and an uban number.