Adding to 1222163500 its reverse (53612221), we get a palindrome (1275775721).
It is an unprimeable number.
Almost surely, 21222163500 is an apocalyptic number.
1222163500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 1222163500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1339936416).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1222163500 is a wasteful number, since it uses less digits than its factorization.
1222163500 is an evil number, because the sum of its binary digits is even.
The square root of 1222163500 is about 34959.4550872865. The cubic root of 1222163500 is about 1069.1609866749.
The spelling of 1222163500 in words is "one billion, two hundred twenty-two million, one hundred sixty-three thousand, five hundred".