1223312200 has 48 divisors (see below), whose sum is σ = 3102770160. Its totient is φ = 444840000.

The previous prime is 1223312159. The next prime is 1223312213. The reversal of 1223312200 is 22133221.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 275826 + ... + 280225.

It is an arithmetic number, because the mean of its divisors is an integer number (64641045).

Almost surely, 2^1223312200 is an apocalyptic number.

1223312200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1223312200 is an abundant number, since it is smaller than the sum of its proper divisors (1879457960).

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

1223312200 is a wasteful number, since it uses less digits than its factorization.

1223312200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556078 (or 556069 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1223312200 is about 34975.8802605453. The cubic root of 1223312200 is about 1069.4958465777.

Adding to 1223312200 its reverse (22133221), we get a palindrome (1245445421).

The spelling of 1223312200 in words is "one billion, two hundred twenty-three million, three hundred twelve thousand, two hundred".