1223422200 has 864 divisors, whose sum is σ = 5672918160. Its totient is φ = 232243200.

The previous prime is 1223422199. The next prime is 1223422309. The reversal of 1223422200 is 22243221.

1223422200 is a `hidden beast` number, since 1 + 223 + 422 + 20 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

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 215 ways as a sum of consecutive naturals, for example, 12612552 + ... + 12612648.

Almost surely, 2^1223422200 is an apocalyptic number.

1223422200 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 1223422200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2836459080).

1223422200 is an abundant number, since it is smaller than the sum of its proper divisors (4449495960).

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

1223422200 is a wasteful number, since it uses less digits than its factorization.

1223422200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157 (or 138 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 1223422200 is about 34977.4527374422. The cubic root of 1223422200 is about 1069.5279019045.

Adding to 1223422200 its reverse (22243221), we get a palindrome (1245665421).

The spelling of 1223422200 in words is "one billion, two hundred twenty-three million, four hundred twenty-two thousand, two hundred".