22203443231440 has 160 divisors (see below), whose sum is σ = 53624632089600. Its totient is φ = 8540782387200.

The previous prime is 22203443231401. The next prime is 22203443231447. The reversal of 22203443231440 is 4413234430222.

It is a junction number, because it is equal to n+sod(n) for n = 22203443231396 and 22203443231405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22203443231447) 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 31 ways as a sum of consecutive naturals, for example, 279076786 + ... + 279156334.

It is an arithmetic number, because the mean of its divisors is an integer number (335153950560).

Almost surely, 2^{22203443231440} is an apocalyptic number.

22203443231440 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 22203443231440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26812316044800).

22203443231440 is an abundant number, since it is smaller than the sum of its proper divisors (31421188858160).

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

22203443231440 is a wasteful number, since it uses less digits than its factorization.

22203443231440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80301 (or 80295 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 34.

Adding to 22203443231440 its reverse (4413234430222), we get a palindrome (26616677661662).

The spelling of 22203443231440 in words is "twenty-two trillion, two hundred three billion, four hundred forty-three million, two hundred thirty-one thousand, four hundred forty".