21320303332 has 18 divisors (see below), whose sum is σ = 39377598918. Its totient is φ = 10099090368.

The previous prime is 21320303327. The next prime is 21320303369. The reversal of 21320303332 is 23330302312.

It can be written as a sum of positive squares in only one way, i.e., 19216613376 + 2103689956 = 138624^2 + 45866^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7380933 + ... + 7383820.

Almost surely, 2^21320303332 is an apocalyptic number.

It is an amenable number.

21320303332 is a deficient number, since it is larger than the sum of its proper divisors (18057295586).

21320303332 is a wasteful number, since it uses less digits than its factorization.

21320303332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14764795 (or 14764774 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 22.

Adding to 21320303332 its reverse (23330302312), we get a palindrome (44650605644).

The spelling of 21320303332 in words is "twenty-one billion, three hundred twenty million, three hundred three thousand, three hundred thirty-two".