21422011434 has 64 divisors (see below), whose sum is σ = 46385961600. Its totient is φ = 6572337408.

The previous prime is 21422011427. The next prime is 21422011451. The reversal of 21422011434 is 43411022412.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3189672 + ... + 3196380.

It is an arithmetic number, because the mean of its divisors is an integer number (724780650).

Almost surely, 2^21422011434 is an apocalyptic number.

21422011434 is an abundant number, since it is smaller than the sum of its proper divisors (24963950166).

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

21422011434 is a wasteful number, since it uses less digits than its factorization.

21422011434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7527.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 21422011434 its reverse (43411022412), we get a palindrome (64833033846).

The spelling of 21422011434 in words is "twenty-one billion, four hundred twenty-two million, eleven thousand, four hundred thirty-four".