1200120204 has 12 divisors (see below), whose sum is σ = 2800280504. Its totient is φ = 400040064.

The previous prime is 1200120179. The next prime is 1200120217. The reversal of 1200120204 is 4020210021.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Harshad number since it is a multiple of its sum of digits (12), and also a Moran number because the ratio is a prime number: 100010017 = 1200120204 / (1 + 2 + 0 + 0 + 1 + 2 + 0 + 2 + 0 + 4).

It is a self number, because there is not a number n which added to its sum of digits gives 1200120204.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50004997 + ... + 50005020.

Almost surely, 2^1200120204 is an apocalyptic number.

It is an amenable number.

1200120204 is an abundant number, since it is smaller than the sum of its proper divisors (1600160300).

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

1200120204 is a wasteful number, since it uses less digits than its factorization.

1200120204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100010024 (or 100010022 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 1200120204 is about 34642.7511032250. The cubic root of 1200120204 is about 1062.6940501676.

Adding to 1200120204 its reverse (4020210021), we get a palindrome (5220330225).

The spelling of 1200120204 in words is "one billion, two hundred million, one hundred twenty thousand, two hundred four".