1200223321 has 6 divisors (see below), whose sum is σ = 1319253866. Its totient is φ = 1091112000.

The previous prime is 1200223313. The next prime is 1200223333. The reversal of 1200223321 is 1233220021.

It can be written as a sum of positive squares in only one way, i.e., 949317721 + 250905600 = 30811^2 + 15840^2 .

It is not a de Polignac number, because 1200223321 - 2³ = 1200223313 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1200223295 and 1200223304.

It is not an unprimeable number, because it can be changed into a prime (1200223351) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4959480 + ... + 4959721.

Almost surely, 2^1200223321 is an apocalyptic number.

1200223321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1200223321 is a deficient number, since it is larger than the sum of its proper divisors (119030545).

1200223321 is an equidigital number, since it uses as much as digits as its factorization.

1200223321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9919223 (or 9919212 counting only the distinct ones).

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

The square root of 1200223321 is about 34644.2393624106. The cubic root of 1200223321 is about 1062.7244856422.

Adding to 1200223321 its reverse (1233220021), we get a palindrome (2433443342).

The spelling of 1200223321 in words is "one billion, two hundred million, two hundred twenty-three thousand, three hundred twenty-one".