2012021 has 8 divisors (see below), whose sum is σ = 2217888. Its totient is φ = 1810000.

The previous prime is 2012011. The next prime is 2012027. The reversal of 2012021 is 1202102.

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

It is a cyclic number.

It is not a de Polignac number, because 2012021 - 2⁶ = 2011957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012027) 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, 206 + ... + 2016.

It is an arithmetic number, because the mean of its divisors is an integer number (277236).

2^2012021 is an apocalyptic number.

It is an amenable number.

2012021 is a deficient number, since it is larger than the sum of its proper divisors (205867).

2012021 is a wasteful number, since it uses less digits than its factorization.

2012021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1923.

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

The square root of 2012021 is about 1418.4572605475. The cubic root of 2012021 is about 126.2440261200.

Adding to 2012021 its reverse (1202102), we get a palindrome (3214123).

It can be divided in two parts, 201 and 2021, that added together give a palindrome (2222).

The spelling of 2012021 in words is "two million, twelve thousand, twenty-one".