21332224434 has 32 divisors (see below), whose sum is σ = 44883720000. Its totient is φ = 6749175104.

The previous prime is 21332224423. The next prime is 21332224447. The reversal of 21332224434 is 43442223312.

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, 1028709 + ... + 1049240.

It is an arithmetic number, because the mean of its divisors is an integer number (1402616250).

Almost surely, 2^21332224434 is an apocalyptic number.

21332224434 is an abundant number, since it is smaller than the sum of its proper divisors (23551495566).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21332224434 is a wasteful number, since it uses less digits than its factorization.

21332224434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2078042.

The product of its digits is 27648, while the sum is 30.

Adding to 21332224434 its reverse (43442223312), we get a palindrome (64774447746).

The spelling of 21332224434 in words is "twenty-one billion, three hundred thirty-two million, two hundred twenty-four thousand, four hundred thirty-four".