222315144 has 16 divisors (see below), whose sum is σ = 555787920. Its totient is φ = 74105040.

The previous prime is 222315133. The next prime is 222315169. The reversal of 222315144 is 441513222.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 9263131 = 222315144 / (2 + 2 + 2 + 3 + 1 + 5 + 1 + 4 + 4).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4631542 + ... + 4631589.

It is an arithmetic number, because the mean of its divisors is an integer number (34736745).

Almost surely, 2^222315144 is an apocalyptic number.

222315144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

222315144 is an abundant number, since it is smaller than the sum of its proper divisors (333472776).

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

222315144 is a wasteful number, since it uses less digits than its factorization.

222315144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9263140 (or 9263136 counting only the distinct ones).

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

The square root of 222315144 is about 14910.2362154327. The cubic root of 222315144 is about 605.7912775507.

Adding to 222315144 its reverse (441513222), we get a palindrome (663828366).

The spelling of 222315144 in words is "two hundred twenty-two million, three hundred fifteen thousand, one hundred forty-four".