22444111144421 has 8 divisors (see below), whose sum is σ = 23231727880920. Its totient is φ = 21657406532608.

The previous prime is 22444111144397. The next prime is 22444111144447. The reversal of 22444111144421 is 12444111144422.

It can be written as a sum of positive squares in 4 ways, for example, as 8103416222500 + 14340694921921 = 2846650^2 + 3786911^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22444111144421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22444111146421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 227981096 + ... + 228079521.

It is an arithmetic number, because the mean of its divisors is an integer number (2903965985115).

Almost surely, 2^{22444111144421} is an apocalyptic number.

It is an amenable number.

22444111144421 is a deficient number, since it is larger than the sum of its proper divisors (787616736499).

22444111144421 is a wasteful number, since it uses less digits than its factorization.

22444111144421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456062343.

The product of its digits is 32768, while the sum is 35.

Adding to 22444111144421 its reverse (12444111144422), we get a palindrome (34888222288843).

Subtracting from 22444111144421 its reverse (12444111144422), we obtain a palindrome (9999999999999).

The spelling of 22444111144421 in words is "twenty-two trillion, four hundred forty-four billion, one hundred eleven million, one hundred forty-four thousand, four hundred twenty-one".