222144453440 has 224 divisors, whose sum is σ = 666198677760. Its totient is φ = 68669669376.

The previous prime is 222144453407. The next prime is 222144453463. The reversal of 222144453440 is 44354441222.

It is a tau number, because it is divible by the number of its divisors (224).

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 222144453440.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1163456 + ... + 1340864.

It is an arithmetic number, because the mean of its divisors is an integer number (2974101240).

Almost surely, 2^222144453440 is an apocalyptic number.

222144453440 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 222144453440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (333099338880).

222144453440 is an abundant number, since it is smaller than the sum of its proper divisors (444054224320).

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

222144453440 is a wasteful number, since it uses less digits than its factorization.

222144453440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177489 (or 177479 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 35.

Adding to 222144453440 its reverse (44354441222), we get a palindrome (266498894662).

The spelling of 222144453440 in words is "two hundred twenty-two billion, one hundred forty-four million, four hundred fifty-three thousand, four hundred forty".