22143401344 has 128 divisors (see below), whose sum is σ = 47353622400. Its totient is φ = 10283728896.

The previous prime is 22143401341. The next prime is 22143401347. The reversal of 22143401344 is 44310434122.

It is an interprime number because it is at equal distance from previous prime (22143401341) and next prime (22143401347).

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×22143401344² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22143401341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32902192 + ... + 32902864.

It is an arithmetic number, because the mean of its divisors is an integer number (369950175).

Almost surely, 2^22143401344 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 22143401344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23676811200).

22143401344 is an abundant number, since it is smaller than the sum of its proper divisors (25210221056).

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

22143401344 is a wasteful number, since it uses less digits than its factorization.

22143401344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 952 (or 940 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 22143401344 its reverse (44310434122), we get a palindrome (66453835466).

The spelling of 22143401344 in words is "twenty-two billion, one hundred forty-three million, four hundred one thousand, three hundred forty-four".