2012000020 has 24 divisors (see below), whose sum is σ = 4230813384. Its totient is φ = 803730816.

The previous prime is 2012000009. The next prime is 2012000033. The reversal of 2012000020 is 200002102.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 747913104 + 1264086916 = 27348^2 + 35554^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2011999967 and 2012000012.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51307 + ... + 81586.

It is an arithmetic number, because the mean of its divisors is an integer number (176283891).

Almost surely, 2^2012000020 is an apocalyptic number.

2012000020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2012000020 is an abundant number, since it is smaller than the sum of its proper divisors (2218813364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2012000020 is a wasteful number, since it uses less digits than its factorization.

2012000020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133659 (or 133657 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 7.

The square root of 2012000020 is about 44855.3232069506. The cubic root of 2012000020 is about 1262.4358732255.

Adding to 2012000020 its reverse (200002102), we get a palindrome (2212002122).

The spelling of 2012000020 in words is "two billion, twelve million, twenty", and thus it is an aban number and an uban number.