1243530222 has 16 divisors (see below), whose sum is σ = 2713156992. Its totient is φ = 376827320.

The previous prime is 1243530217. The next prime is 1243530269. The reversal of 1243530222 is 2220353421.

It is a junction number, because it is equal to n+sod(n) for n = 1243530192 and 1243530201.

It is a congruent number.

It is an unprimeable number.

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, 9420618 + ... + 9420749.

It is an arithmetic number, because the mean of its divisors is an integer number (169572312).

Almost surely, 2^1243530222 is an apocalyptic number.

1243530222 is an abundant number, since it is smaller than the sum of its proper divisors (1469626770).

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

1243530222 is a wasteful number, since it uses less digits than its factorization.

1243530222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18841383.

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 1243530222 is about 35263.7238816322. The cubic root of 1243530222 is about 1075.3556341290.

Adding to 1243530222 its reverse (2220353421), we get a palindrome (3463883643).

The spelling of 1243530222 in words is "one billion, two hundred forty-three million, five hundred thirty thousand, two hundred twenty-two".