21432230330 has 32 divisors (see below), whose sum is σ = 44320020480. Its totient is φ = 7309716480.

The previous prime is 21432230321. The next prime is 21432230357. The reversal of 21432230330 is 3303223412.

It is a junction number, because it is equal to n+sod(n) for n = 21432230296 and 21432230305.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 788135 + ... + 814874.

It is an arithmetic number, because the mean of its divisors is an integer number (1385000640).

Almost surely, 2^21432230330 is an apocalyptic number.

21432230330 is an abundant number, since it is smaller than the sum of its proper divisors (22887790150).

21432230330 is a wasteful number, since it uses less digits than its factorization.

21432230330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1603214.

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

Adding to 21432230330 its reverse (3303223412), we get a palindrome (24735453742).

The spelling of 21432230330 in words is "twenty-one billion, four hundred thirty-two million, two hundred thirty thousand, three hundred thirty".