1200244221 has 24 divisors (see below), whose sum is σ = 1942415904. Its totient is φ = 707758560.

The previous prime is 1200244211. The next prime is 1200244237. The reversal of 1200244221 is 1224420021.

1200244221 is a `hidden beast` number, since 1 + 200 + 2 + 442 + 21 = 666.

It is not a de Polignac number, because 1200244221 - 2¹⁷ = 1200113149 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1200244194 and 1200244203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200244211) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 160171 + ... + 167496.

It is an arithmetic number, because the mean of its divisors is an integer number (80933996).

Almost surely, 2^1200244221 is an apocalyptic number.

1200244221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1200244221 is a deficient number, since it is larger than the sum of its proper divisors (742171683).

1200244221 is a wasteful number, since it uses less digits than its factorization.

1200244221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327721 (or 327718 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 1200244221 is about 34644.5409985469. The cubic root of 1200244221 is about 1062.7306541644.

Adding to 1200244221 its reverse (1224420021), we get a palindrome (2424664242).

The spelling of 1200244221 in words is "one billion, two hundred million, two hundred forty-four thousand, two hundred twenty-one".