22143220144 has 80 divisors (see below), whose sum is σ = 46087050240. Its totient is φ = 10287325440.

The previous prime is 22143220091. The next prime is 22143220147. The reversal of 22143220144 is 44102234122.

It is not an unprimeable number, because it can be changed into a prime (22143220147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1249554 + ... + 1267150.

It is an arithmetic number, because the mean of its divisors is an integer number (576088128).

Almost surely, 2^22143220144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22143220144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23043525120).

22143220144 is an abundant number, since it is smaller than the sum of its proper divisors (23943830096).

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

22143220144 is a wasteful number, since it uses less digits than its factorization.

22143220144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17738 (or 17732 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 22143220144 its reverse (44102234122), we get a palindrome (66245454266).

The spelling of 22143220144 in words is "twenty-two billion, one hundred forty-three million, two hundred twenty thousand, one hundred forty-four".