21302003332 has 6 divisors (see below), whose sum is σ = 37278505838. Its totient is φ = 10651001664.

The previous prime is 21302003329. The next prime is 21302003341. The reversal of 21302003332 is 23330020312.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 20907424836 + 394578496 = 144594^2 + 19864^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 2662750413 + ... + 2662750420.

Almost surely, 2^21302003332 is an apocalyptic number.

It is an amenable number.

21302003332 is a deficient number, since it is larger than the sum of its proper divisors (15976502506).

21302003332 is a wasteful number, since it uses less digits than its factorization.

21302003332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5325500837 (or 5325500835 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 19.

Adding to 21302003332 its reverse (23330020312), we get a palindrome (44632023644).

The spelling of 21302003332 in words is "twenty-one billion, three hundred two million, three thousand, three hundred thirty-two".