21002332301 has 4 divisors (see below), whose sum is σ = 21005197500. Its totient is φ = 20999467104.

The previous prime is 21002332289. The next prime is 21002332327. The reversal of 21002332301 is 10323320012.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16874269801 + 4128062500 = 129901^2 + 64250^2 .

It is a cyclic number.

It is not a de Polignac number, because 21002332301 - 2¹⁸ = 21002070157 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21002332301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21002332331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1421576 + ... + 1436273.

It is an arithmetic number, because the mean of its divisors is an integer number (5251299375).

Almost surely, 2^21002332301 is an apocalyptic number.

It is an amenable number.

21002332301 is a deficient number, since it is larger than the sum of its proper divisors (2865199).

21002332301 is an equidigital number, since it uses as much as digits as its factorization.

21002332301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2865198.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 21002332301 its reverse (10323320012), we get a palindrome (31325652313).

The spelling of 21002332301 in words is "twenty-one billion, two million, three hundred thirty-two thousand, three hundred one".