222144450 has 192 divisors, whose sum is σ = 641101824. Its totient is φ = 50400000.

The previous prime is 222144443. The next prime is 222144451. The reversal of 222144450 is 54441222.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 222144450.

It is not an unprimeable number, because it can be changed into a prime (222144451) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2199400 + ... + 2199500.

It is an arithmetic number, because the mean of its divisors is an integer number (3339072).

Almost surely, 2^222144450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222144450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (320550912).

222144450 is an abundant number, since it is smaller than the sum of its proper divisors (418957374).

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

222144450 is a wasteful number, since it uses less digits than its factorization.

222144450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201 (or 196 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 24.

The square root of 222144450 is about 14904.5110620912. The cubic root of 222144450 is about 605.6361952793.

Adding to 222144450 its reverse (54441222), we get a palindrome (276585672).

The spelling of 222144450 in words is "two hundred twenty-two million, one hundred forty-four thousand, four hundred fifty".