21032332430 has 32 divisors (see below), whose sum is σ = 38752483968. Its totient is φ = 8214343200.

The previous prime is 21032332427. The next prime is 21032332513. The reversal of 21032332430 is 3423323012.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21032332396 and 21032332405.

It is a congruent number.

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, 1494125 + ... + 1508135.

It is an arithmetic number, because the mean of its divisors is an integer number (1211015124).

Almost surely, 2^21032332430 is an apocalyptic number.

21032332430 is a deficient number, since it is larger than the sum of its proper divisors (17720151538).

21032332430 is a wasteful number, since it uses less digits than its factorization.

21032332430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17552.

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

Adding to 21032332430 its reverse (3423323012), we get a palindrome (24455655442).

The spelling of 21032332430 in words is "twenty-one billion, thirty-two million, three hundred thirty-two thousand, four hundred thirty".