21302032330 has 8 divisors (see below), whose sum is σ = 38343658212. Its totient is φ = 8520812928.

The previous prime is 21302032321. The next prime is 21302032361. The reversal of 21302032330 is 3323020312.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 17667992241 + 3634040089 = 132921^2 + 60283^2 .

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 = 21302032298 and 21302032307.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1065101607 + ... + 1065101626.

Almost surely, 2^21302032330 is an apocalyptic number.

21302032330 is a deficient number, since it is larger than the sum of its proper divisors (17041625882).

21302032330 is a wasteful number, since it uses less digits than its factorization.

21302032330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2130203240.

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

Adding to 21302032330 its reverse (3323020312), we get a palindrome (24625052642).

It can be divided in two parts, 213020 and 32330, that added together give a triangular number (245350 = T₇₀₀).

The spelling of 21302032330 in words is "twenty-one billion, three hundred two million, thirty-two thousand, three hundred thirty".