21224120323422 has 32 divisors (see below), whose sum is σ = 43597908698400. Its totient is φ = 6883116645888.

The previous prime is 21224120323397. The next prime is 21224120323457. The reversal of 21224120323422 is 22432302142212.

It is a self number, because there is not a number n which added to its sum of digits gives 21224120323422.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1373154 + ... + 6658362.

It is an arithmetic number, because the mean of its divisors is an integer number (1362434646825).

Almost surely, 2^{21224120323422} is an apocalyptic number.

21224120323422 is an abundant number, since it is smaller than the sum of its proper divisors (22373788374978).

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

21224120323422 is a wasteful number, since it uses less digits than its factorization.

21224120323422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5303340.

The product of its (nonzero) digits is 18432, while the sum is 30.

Adding to 21224120323422 its reverse (22432302142212), we get a palindrome (43656422465634).

The spelling of 21224120323422 in words is "twenty-one trillion, two hundred twenty-four billion, one hundred twenty million, three hundred twenty-three thousand, four hundred twenty-two".