21432023330 has 8 divisors (see below), whose sum is σ = 38577642012. Its totient is φ = 8572809328.

The previous prime is 21432023317. The next prime is 21432023387. The reversal of 21432023330 is 3332023412.

It can be written as a sum of positive squares in 2 ways, for example, as 21379995961 + 52027369 = 146219^2 + 7213^2 .

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 = 21432023296 and 21432023305.

It is an unprimeable number.

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, 1071601157 + ... + 1071601176.

Almost surely, 2^21432023330 is an apocalyptic number.

21432023330 is a deficient number, since it is larger than the sum of its proper divisors (17145618682).

21432023330 is a wasteful number, since it uses less digits than its factorization.

21432023330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2143202340.

The product of its (nonzero) digits is 2592, while the sum is 23.

Adding to 21432023330 its reverse (3332023412), we get a palindrome (24764046742).

The spelling of 21432023330 in words is "twenty-one billion, four hundred thirty-two million, twenty-three thousand, three hundred thirty".