2013230021 has 16 divisors (see below), whose sum is σ = 2213291520. Its totient is φ = 1816068720.

The previous prime is 2013229979. The next prime is 2013230041. The reversal of 2013230021 is 1200323102.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2013230021 - 2⁶ = 2013229957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2013229978 and 2013230005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2013230041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 817490 + ... + 819948.

It is an arithmetic number, because the mean of its divisors is an integer number (138330720).

Almost surely, 2^2013230021 is an apocalyptic number.

It is an amenable number.

2013230021 is a deficient number, since it is larger than the sum of its proper divisors (200061499).

2013230021 is a wasteful number, since it uses less digits than its factorization.

2013230021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3016.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 2013230021 is about 44869.0318705452. The cubic root of 2013230021 is about 1262.6930768460.

Adding to 2013230021 its reverse (1200323102), we get a palindrome (3213553123).

The spelling of 2013230021 in words is "two billion, thirteen million, two hundred thirty thousand, twenty-one".