22440043344221 has 8 divisors (see below), whose sum is σ = 22925796986304. Its totient is φ = 21958725808800.

The previous prime is 22440043344179. The next prime is 22440043344259. The reversal of 22440043344221 is 12244334004422.

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

It is a cyclic number.

It is not a de Polignac number, because 22440043344221 - 2¹⁰ = 22440043343197 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 (22440043344421) 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, 1109016440 + ... + 1109036673.

It is an arithmetic number, because the mean of its divisors is an integer number (2865724623288).

Almost surely, 2^{22440043344221} is an apocalyptic number.

It is an amenable number.

22440043344221 is a deficient number, since it is larger than the sum of its proper divisors (485753642083).

22440043344221 is a wasteful number, since it uses less digits than its factorization.

22440043344221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2218053331.

The product of its (nonzero) digits is 147456, while the sum is 35.

Adding to 22440043344221 its reverse (12244334004422), we get a palindrome (34684377348643).

The spelling of 22440043344221 in words is "twenty-two trillion, four hundred forty billion, forty-three million, three hundred forty-four thousand, two hundred twenty-one".