222144312 has 64 divisors (see below), whose sum is σ = 600072480. Its totient is φ = 68124672.

The previous prime is 222144311. The next prime is 222144313. The reversal of 222144312 is 213441222.

It is an interprime number because it is at equal distance from previous prime (222144311) and next prime (222144313).

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 (222144311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109128 + ... + 111144.

Almost surely, 2^222144312 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 222144312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (300036240).

222144312 is an abundant number, since it is smaller than the sum of its proper divisors (377928168).

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

222144312 is a wasteful number, since it uses less digits than its factorization.

222144312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2392 (or 2388 counting only the distinct ones).

The product of its digits is 768, while the sum is 21.

The square root of 222144312 is about 14904.5064326196. The cubic root of 222144312 is about 605.6360698687.

Adding to 222144312 its reverse (213441222), we get a palindrome (435585534).

The spelling of 222144312 in words is "two hundred twenty-two million, one hundred forty-four thousand, three hundred twelve".