2012003021 has 4 divisors (see below), whose sum is σ = 2299432032. Its totient is φ = 1724574012.

The previous prime is 2012003017. The next prime is 2012003027. The reversal of 2012003021 is 1203002102.

It is a happy number.

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 not a de Polignac number, because 2012003021 - 2² = 2012003017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2012002993 and 2012003011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012003027) 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, 143714495 + ... + 143714508.

It is an arithmetic number, because the mean of its divisors is an integer number (574858008).

Almost surely, 2^2012003021 is an apocalyptic number.

It is an amenable number.

2012003021 is a deficient number, since it is larger than the sum of its proper divisors (287429011).

2012003021 is an equidigital number, since it uses as much as digits as its factorization.

2012003021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287429010.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 2012003021 is about 44855.3566589321. The cubic root of 2012003021 is about 1262.4365008876.

Adding to 2012003021 its reverse (1203002102), we get a palindrome (3215005123).

The spelling of 2012003021 in words is "two billion, twelve million, three thousand, twenty-one".