1001223200 has 36 divisors (see below), whose sum is σ = 2444238090. Its totient is φ = 400488960.

The previous prime is 1001223163. The next prime is 1001223227. The reversal of 1001223200 is 23221001.

It is a happy number.

1001223200 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 439153936 + 562069264 = 20956^2 + 23708^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 624965 + ... + 626564.

Almost surely, 2^1001223200 is an apocalyptic number.

1001223200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1001223200 is an abundant number, since it is smaller than the sum of its proper divisors (1443014890).

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

1001223200 is a wasteful number, since it uses less digits than its factorization.

1001223200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1251549 (or 1251536 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 1001223200 is about 31642.1111811459. Note that the first 4 decimals coincide. The cubic root of 1001223200 is about 1000.4075671997.

Adding to 1001223200 its reverse (23221001), we get a palindrome (1024444201).

The spelling of 1001223200 in words is "one billion, one million, two hundred twenty-three thousand, two hundred".