2013002021 has 16 divisors (see below), whose sum is σ = 2125243008. Its totient is φ = 1902912000.

The previous prime is 2013002003. The next prime is 2013002023. The reversal of 2013002021 is 1202003102.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2013002021 - 2³⁰ = 939260197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2013001993 and 2013002011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2013002023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1478381 + ... + 1479741.

It is an arithmetic number, because the mean of its divisors is an integer number (132827688).

Almost surely, 2^2013002021 is an apocalyptic number.

It is an amenable number.

2013002021 is a deficient number, since it is larger than the sum of its proper divisors (112240987).

2013002021 is a wasteful number, since it uses less digits than its factorization.

2013002021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2092.

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

The square root of 2013002021 is about 44866.4910707312. The cubic root of 2013002021 is about 1262.6454080274.

Adding to 2013002021 its reverse (1202003102), we get a palindrome (3215005123).

The spelling of 2013002021 in words is "two billion, thirteen million, two thousand, twenty-one".