222231320 has 32 divisors (see below), whose sum is σ = 500461200. Its totient is φ = 88814208.

The previous prime is 222231311. The next prime is 222231329. The reversal of 222231320 is 23132222.

It is an interprime number because it is at equal distance from previous prime (222231311) and next prime (222231329).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222231329) 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 7 ways as a sum of consecutive naturals, for example, 69926 + ... + 73034.

Almost surely, 2^222231320 is an apocalyptic number.

222231320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222231320 is an abundant number, since it is smaller than the sum of its proper divisors (278229880).

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

222231320 is a wasteful number, since it uses less digits than its factorization.

222231320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4907 (or 4903 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 222231320 is about 14907.4249956188. The cubic root of 222231320 is about 605.7151300443.

Adding to 222231320 its reverse (23132222), we get a palindrome (245363542).

The spelling of 222231320 in words is "two hundred twenty-two million, two hundred thirty-one thousand, three hundred twenty".