22244433444221 has 8 divisors (see below), whose sum is σ = 23418766432320. Its totient is φ = 21070457789472.

The previous prime is 22244433444179. The next prime is 22244433444251. The reversal of 22244433444221 is 12244433444222.

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 22244433444221 - 2¹⁸ = 22244433182077 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 (22244433444251) 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, 89205545 + ... + 89454558.

It is an arithmetic number, because the mean of its divisors is an integer number (2927345804040).

Almost surely, 2^{22244433444221} is an apocalyptic number.

It is an amenable number.

22244433444221 is a deficient number, since it is larger than the sum of its proper divisors (1174332988099).

22244433444221 is a wasteful number, since it uses less digits than its factorization.

22244433444221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178666675.

The product of its digits is 1179648, while the sum is 41.

Adding to 22244433444221 its reverse (12244433444222), we get a palindrome (34488866888443).

Subtracting from 22244433444221 its reverse (12244433444222), we obtain a palindrome (9999999999999).

The spelling of 22244433444221 in words is "twenty-two trillion, two hundred forty-four billion, four hundred thirty-three million, four hundred forty-four thousand, two hundred twenty-one".