222135144 has 128 divisors (see below), whose sum is σ = 702535680. Its totient is φ = 56851200.

The previous prime is 222135077. The next prime is 222135169. The reversal of 222135144 is 441531222.

222135144 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

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, 130362 + ... + 132054.

It is an arithmetic number, because the mean of its divisors is an integer number (5488560).

Almost surely, 2^222135144 is an apocalyptic number.

222135144 is a gapful number since it is divisible by the number (24) 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 222135144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (351267840).

222135144 is an abundant number, since it is smaller than the sum of its proper divisors (480400536).

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

222135144 is a wasteful number, since it uses less digits than its factorization.

222135144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1791 (or 1787 counting only the distinct ones).

The product of its digits is 1920, while the sum is 24.

The square root of 222135144 is about 14904.1988714590. The cubic root of 222135144 is about 605.6277381258.

Adding to 222135144 its reverse (441531222), we get a palindrome (663666366).

The spelling of 222135144 in words is "two hundred twenty-two million, one hundred thirty-five thousand, one hundred forty-four".