21043344222 has 24 divisors (see below), whose sum is σ = 45603314640. Its totient is φ = 7013001600.

The previous prime is 21043344199. The next prime is 21043344229. The reversal of 21043344222 is 22244334012.

21043344222 is a `hidden beast` number, since 2 + 1 + 0 + 433 + 4 + 4 + 222 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21043344229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28947 + ... + 207182.

It is an arithmetic number, because the mean of its divisors is an integer number (1900138110).

Almost surely, 2^21043344222 is an apocalyptic number.

21043344222 is an abundant number, since it is smaller than the sum of its proper divisors (24559970418).

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

21043344222 is a wasteful number, since it uses less digits than its factorization.

21043344222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241088 (or 241085 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 21043344222 its reverse (22244334012), we get a palindrome (43287678234).

The spelling of 21043344222 in words is "twenty-one billion, forty-three million, three hundred forty-four thousand, two hundred twenty-two".