21322021330 has 8 divisors (see below), whose sum is σ = 38379638412. Its totient is φ = 8528808528.

The previous prime is 21322021283. The next prime is 21322021337. The reversal of 21322021330 is 3312022312.

It can be written as a sum of positive squares in 2 ways, for example, as 21213048609 + 108972721 = 145647^2 + 10439^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 21322021298 and 21322021307.

It is not an unprimeable number, because it can be changed into a prime (21322021337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1066101057 + ... + 1066101076.

Almost surely, 2^21322021330 is an apocalyptic number.

21322021330 is a deficient number, since it is larger than the sum of its proper divisors (17057617082).

21322021330 is a wasteful number, since it uses less digits than its factorization.

21322021330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2132202140.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 21322021330 its reverse (3312022312), we get a palindrome (24634043642).

The spelling of 21322021330 in words is "twenty-one billion, three hundred twenty-two million, twenty-one thousand, three hundred thirty".