21233144322 has 96 divisors (see below), whose sum is σ = 50983732800. Its totient is φ = 6345150336.

The previous prime is 21233144227. The next prime is 21233144327. The reversal of 21233144322 is 22344133212.

21233144322 is a `hidden beast` number, since 2 + 1 + 2 + 331 + 4 + 4 + 322 = 666.

It is not an unprimeable number, because it can be changed into a prime (21233144327) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1795204 + ... + 1806992.

It is an arithmetic number, because the mean of its divisors is an integer number (531080550).

Almost surely, 2^21233144322 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21233144322, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25491866400).

21233144322 is an abundant number, since it is smaller than the sum of its proper divisors (29750588478).

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

21233144322 is a wasteful number, since it uses less digits than its factorization.

21233144322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12032 (or 12029 counting only the distinct ones).

The product of its digits is 6912, while the sum is 27.

Adding to 21233144322 its reverse (22344133212), we get a palindrome (43577277534).

The spelling of 21233144322 in words is "twenty-one billion, two hundred thirty-three million, one hundred forty-four thousand, three hundred twenty-two".