21223304144422 has 16 divisors (see below), whose sum is σ = 32285453209344. Its totient is φ = 10461506013000.

The previous prime is 21223304144417. The next prime is 21223304144429. The reversal of 21223304144422 is 22444140332212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21223304144429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2725104 + ... + 7062067.

It is an arithmetic number, because the mean of its divisors is an integer number (2017840825584).

Almost surely, 2^{21223304144422} is an apocalyptic number.

21223304144422 is a deficient number, since it is larger than the sum of its proper divisors (11062149064922).

21223304144422 is a wasteful number, since it uses less digits than its factorization.

21223304144422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9802515.

The product of its (nonzero) digits is 73728, while the sum is 34.

Adding to 21223304144422 its reverse (22444140332212), we get a palindrome (43667444476634).

The spelling of 21223304144422 in words is "twenty-one trillion, two hundred twenty-three billion, three hundred four million, one hundred forty-four thousand, four hundred twenty-two".