21342032322 has 128 divisors (see below), whose sum is σ = 49380710400. Its totient is φ = 6091109376.

The previous prime is 21342032317. The next prime is 21342032347. The reversal of 21342032322 is 22323024312.

It is a junction number, because it is equal to n+sod(n) for n = 21342032292 and 21342032301.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 50935429 + ... + 50935847.

It is an arithmetic number, because the mean of its divisors is an integer number (385786800).

Almost surely, 2^21342032322 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21342032322, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24690355200).

21342032322 is an abundant number, since it is smaller than the sum of its proper divisors (28038678078).

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

21342032322 is a wasteful number, since it uses less digits than its factorization.

21342032322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 920.

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 21342032322 its reverse (22323024312), we get a palindrome (43665056634).

The spelling of 21342032322 in words is "twenty-one billion, three hundred forty-two million, thirty-two thousand, three hundred twenty-two".