1222163518 has 12 divisors (see below), whose sum is σ = 1858718448. Its totient is φ = 602705520.

The previous prime is 1222163483. The next prime is 1222163519. The reversal of 1222163518 is 8153612221.

It is a self number, because there is not a number n which added to its sum of digits gives 1222163518.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222163519) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 46678 + ... + 67993.

It is an arithmetic number, because the mean of its divisors is an integer number (154893204).

Almost surely, 2^1222163518 is an apocalyptic number.

1222163518 is a deficient number, since it is larger than the sum of its proper divisors (636554930).

1222163518 is an equidigital number, since it uses as much as digits as its factorization.

1222163518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114819 (or 114746 counting only the distinct ones).

The product of its digits is 5760, while the sum is 31.

The square root of 1222163518 is about 34959.4553447276. The cubic root of 1222163518 is about 1069.1609919238.

Adding to 1222163518 its reverse (8153612221), we get a palindrome (9375775739).

The spelling of 1222163518 in words is "one billion, two hundred twenty-two million, one hundred sixty-three thousand, five hundred eighteen".