22143444000 has 192 divisors, whose sum is σ = 74312888832. Its totient is φ = 5760768000.

The previous prime is 22143443969. The next prime is 22143444007. The reversal of 22143444000 is 44434122.

It is a happy number.

It is a super-2 number, since 2×22143444000² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (22143444007) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 469497 + ... + 514503.

It is an arithmetic number, because the mean of its divisors is an integer number (387046296).

Almost surely, 2^22143444000 is an apocalyptic number.

22143444000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22143444000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37156444416).

22143444000 is an abundant number, since it is smaller than the sum of its proper divisors (52169444832).

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

22143444000 is a wasteful number, since it uses less digits than its factorization.

22143444000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45076 (or 45058 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 22143444000 its reverse (44434122), we get a palindrome (22187878122).

The spelling of 22143444000 in words is "twenty-two billion, one hundred forty-three million, four hundred forty-four thousand".