1201223200 has 36 divisors (see below), whose sum is σ = 2932488090. Its totient is φ = 480488960.

The previous prime is 1201223197. The next prime is 1201223209. The reversal of 1201223200 is 23221021.

It can be written as a sum of positive squares in 3 ways, for example, as 718454416 + 482768784 = 26804^2 + 21972^2 .

It is not an unprimeable number, because it can be changed into a prime (1201223209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 749965 + ... + 751564.

Almost surely, 2^1201223200 is an apocalyptic number.

1201223200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201223200 is an abundant number, since it is smaller than the sum of its proper divisors (1731264890).

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

1201223200 is a wasteful number, since it uses less digits than its factorization.

1201223200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1501549 (or 1501536 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 1201223200 is about 34658.6670257239. The cubic root of 1201223200 is about 1063.0195143364.

Adding to 1201223200 its reverse (23221021), we get a palindrome (1224444221).

The spelling of 1201223200 in words is "one billion, two hundred one million, two hundred twenty-three thousand, two hundred".