21432234224 has 10 divisors (see below), whose sum is σ = 41524953840. Its totient is φ = 10716117104.

The previous prime is 21432234191. The next prime is 21432234253. The reversal of 21432234224 is 42243223412.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 669757304 + ... + 669757335.

It is an arithmetic number, because the mean of its divisors is an integer number (4152495384).

Almost surely, 2^21432234224 is an apocalyptic number.

It is an amenable number.

21432234224 is a deficient number, since it is larger than the sum of its proper divisors (20092719616).

21432234224 is a wasteful number, since it uses less digits than its factorization.

21432234224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1339514647 (or 1339514641 counting only the distinct ones).

The product of its digits is 18432, while the sum is 29.

Adding to 21432234224 its reverse (42243223412), we get a palindrome (63675457636).

The spelling of 21432234224 in words is "twenty-one billion, four hundred thirty-two million, two hundred thirty-four thousand, two hundred twenty-four".