21331302002 has 8 divisors (see below), whose sum is σ = 33100296300. Its totient is φ = 10297869904.

The previous prime is 21331302001. The next prime is 21331302023. The reversal of 21331302002 is 20020313312.

It can be written as a sum of positive squares in 2 ways, for example, as 20512254841 + 819047161 = 143221^2 + 28619^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (21331302001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 183890477 + ... + 183890592.

Almost surely, 2^21331302002 is an apocalyptic number.

21331302002 is a deficient number, since it is larger than the sum of its proper divisors (11768994298).

21331302002 is a wasteful number, since it uses less digits than its factorization.

21331302002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367781100.

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

Adding to 21331302002 its reverse (20020313312), we get a palindrome (41351615314).

The spelling of 21331302002 in words is "twenty-one billion, three hundred thirty-one million, three hundred two thousand, two".