1200225220 has 12 divisors (see below), whose sum is σ = 2520473004. Its totient is φ = 480090080.

The previous prime is 1200225217. The next prime is 1200225241. The reversal of 1200225220 is 225220021.

It can be written as a sum of positive squares in 2 ways, for example, as 202549824 + 997675396 = 14232^2 + 31586^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1200225194 and 1200225203.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 30005611 + ... + 30005650.

It is an arithmetic number, because the mean of its divisors is an integer number (210039417).

Almost surely, 2^1200225220 is an apocalyptic number.

1200225220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1200225220 is an abundant number, since it is smaller than the sum of its proper divisors (1320247784).

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

1200225220 is a wasteful number, since it uses less digits than its factorization.

1200225220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60011270 (or 60011268 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 1200225220 is about 34644.2667695537. The cubic root of 1200225220 is about 1062.7250461247.

Adding to 1200225220 its reverse (225220021), we get a palindrome (1425445241).

The spelling of 1200225220 in words is "one billion, two hundred million, two hundred twenty-five thousand, two hundred twenty".