22144034321 has 4 divisors (see below), whose sum is σ = 22164221412. Its totient is φ = 22123847232.

The previous prime is 22144034299. The next prime is 22144034327. The reversal of 22144034321 is 12343044122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3140033296 + 19004001025 = 56036^2 + 137855^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22144034321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22144034327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10091900 + ... + 10094093.

It is an arithmetic number, because the mean of its divisors is an integer number (5541055353).

Almost surely, 2^22144034321 is an apocalyptic number.

It is an amenable number.

22144034321 is a deficient number, since it is larger than the sum of its proper divisors (20187091).

22144034321 is a wasteful number, since it uses less digits than its factorization.

22144034321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20187090.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 22144034321 its reverse (12343044122), we get a palindrome (34487078443).

The spelling of 22144034321 in words is "twenty-two billion, one hundred forty-four million, thirty-four thousand, three hundred twenty-one".