1205204212 has 12 divisors (see below), whose sum is σ = 2127772836. Its totient is φ = 597269120.

The previous prime is 1205204183. The next prime is 1205204213. The reversal of 1205204212 is 2124025021.

It can be written as a sum of positive squares in 2 ways, for example, as 342842256 + 862361956 = 18516^2 + 29366^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1205204212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1205204213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1332739 + ... + 1333642.

It is an arithmetic number, because the mean of its divisors is an integer number (177314403).

Almost surely, 2^1205204212 is an apocalyptic number.

It is an amenable number.

1205204212 is a deficient number, since it is larger than the sum of its proper divisors (922568624).

1205204212 is a wasteful number, since it uses less digits than its factorization.

1205204212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2666498 (or 2666496 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 1205204212 is about 34716.0512155401. The cubic root of 1205204212 is about 1064.1925483498.

Adding to 1205204212 its reverse (2124025021), we get a palindrome (3329229233).

The spelling of 1205204212 in words is "one billion, two hundred five million, two hundred four thousand, two hundred twelve".