21323330430434 has 16 divisors (see below), whose sum is σ = 32072092166400. Its totient is φ = 10632647503584.

The previous prime is 21323330430421. The next prime is 21323330430481. The reversal of 21323330430434 is 43403403332312.

It is a junction number, because it is equal to n+sod(n) for n = 21323330430394 and 21323330430403.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 662954 + ... + 6564005.

It is an arithmetic number, because the mean of its divisors is an integer number (2004505760400).

Almost surely, 2^{21323330430434} is an apocalyptic number.

21323330430434 is a deficient number, since it is larger than the sum of its proper divisors (10748761735966).

21323330430434 is a wasteful number, since it uses less digits than its factorization.

21323330430434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7230977.

The product of its (nonzero) digits is 186624, while the sum is 35.

Adding to 21323330430434 its reverse (43403403332312), we get a palindrome (64726733762746).

The spelling of 21323330430434 in words is "twenty-one trillion, three hundred twenty-three billion, three hundred thirty million, four hundred thirty thousand, four hundred thirty-four".