21002013303233 has 16 divisors (see below), whose sum is σ = 22602604568400. Its totient is φ = 19442015539200.

The previous prime is 21002013303221. The next prime is 21002013303239. The reversal of 21002013303233 is 33230331020012.

It can be written as a sum of positive squares in 8 ways, for example, as 4862695343104 + 16139317960129 = 2205152^2 + 4017377^2 .

It is a cyclic number.

It is not a de Polignac number, because 21002013303233 - 2⁶ = 21002013303169 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21002013303199 and 21002013303208.

It is not an unprimeable number, because it can be changed into a prime (21002013303239) 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, 39608243 + ... + 40134983.

It is an arithmetic number, because the mean of its divisors is an integer number (1412662785525).

Almost surely, 2^{21002013303233} is an apocalyptic number.

It is an amenable number.

21002013303233 is a deficient number, since it is larger than the sum of its proper divisors (1600591265167).

21002013303233 is a wasteful number, since it uses less digits than its factorization.

21002013303233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565268.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 21002013303233 its reverse (33230331020012), we get a palindrome (54232344323245).

The spelling of 21002013303233 in words is "twenty-one trillion, two billion, thirteen million, three hundred three thousand, two hundred thirty-three".