21002003002013 has 8 divisors (see below), whose sum is σ = 22926663042240. Its totient is φ = 19079907468480.

The previous prime is 21002003001971. The next prime is 21002003002021. The reversal of 21002003002013 is 31020030020012.

It is a happy number.

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 21002003002013 - 2⁶ = 21002003001949 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 (21002003002033) 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, 641109545 + ... + 641142302.

It is an arithmetic number, because the mean of its divisors is an integer number (2865832880280).

Almost surely, 2^{21002003002013} is an apocalyptic number.

It is an amenable number.

21002003002013 is a deficient number, since it is larger than the sum of its proper divisors (1924660040227).

21002003002013 is a wasteful number, since it uses less digits than its factorization.

21002003002013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1282253347.

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

Adding to 21002003002013 its reverse (31020030020012), we get a palindrome (52022033022025).

The spelling of 21002003002013 in words is "twenty-one trillion, two billion, three million, two thousand, thirteen".