222144412 has 48 divisors (see below), whose sum is σ = 457228800. Its totient is φ = 92469312.

The previous prime is 222144383. The next prime is 222144413. The reversal of 222144412 is 214441222.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222144413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 158089 + ... + 159487.

It is an arithmetic number, because the mean of its divisors is an integer number (9525600).

Almost surely, 2^222144412 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222144412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (228614400).

222144412 is an abundant number, since it is smaller than the sum of its proper divisors (235084388).

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

222144412 is a wasteful number, since it uses less digits than its factorization.

222144412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1570 (or 1568 counting only the distinct ones).

The product of its digits is 1024, while the sum is 22.

The square root of 222144412 is about 14904.5097873093. The cubic root of 222144412 is about 605.6361607460.

Adding to 222144412 its reverse (214441222), we get a palindrome (436585634).

The spelling of 222144412 in words is "two hundred twenty-two million, one hundred forty-four thousand, four hundred twelve".