2236021 has 8 divisors (see below), whose sum is σ = 2315264. Its totient is φ = 2157840.

The previous prime is 2236009. The next prime is 2236049. The reversal of 2236021 is 1206322.

2236021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 2236021 - 2⁹ = 2235509 is a prime.

It is a Duffinian number.

2236021 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2235986 and 2236004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2236001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8116 + ... + 8386.

It is an arithmetic number, because the mean of its divisors is an integer number (289408).

2^2236021 is an apocalyptic number.

It is an amenable number.

2236021 is a deficient number, since it is larger than the sum of its proper divisors (79243).

2236021 is a wasteful number, since it uses less digits than its factorization.

2236021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 2236021 is about 1495.3330732649. Note that the first 3 decimals coincide. The cubic root of 2236021 is about 130.7651328412.

The spelling of 2236021 in words is "two million, two hundred thirty-six thousand, twenty-one".