1243255222 has 16 divisors (see below), whose sum is σ = 2041772112. Its totient is φ = 563073120.

The previous prime is 1243255219. The next prime is 1243255229. The reversal of 1243255222 is 2225523421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243255229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95913 + ... + 108100.

It is an arithmetic number, because the mean of its divisors is an integer number (127610757).

Almost surely, 2^1243255222 is an apocalyptic number.

1243255222 is a deficient number, since it is larger than the sum of its proper divisors (798516890).

1243255222 is a wasteful number, since it uses less digits than its factorization.

1243255222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204303.

The product of its digits is 9600, while the sum is 28.

The square root of 1243255222 is about 35259.8244748893. The cubic root of 1243255222 is about 1075.2763585859.

Adding to 1243255222 its reverse (2225523421), we get a palindrome (3468778643).

It can be divided in two parts, 12 and 43255222, that added together give a palindrome (43255234).

The spelling of 1243255222 in words is "one billion, two hundred forty-three million, two hundred fifty-five thousand, two hundred twenty-two".