1205543212 has 12 divisors (see below), whose sum is σ = 2128371336. Its totient is φ = 597437120.

The previous prime is 1205543203. The next prime is 1205543231. The reversal of 1205543212 is 2123455021.

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, 1333114 + ... + 1334017.

It is an arithmetic number, because the mean of its divisors is an integer number (177364278).

Almost surely, 2^1205543212 is an apocalyptic number.

It is an amenable number.

1205543212 is a deficient number, since it is larger than the sum of its proper divisors (922828124).

1205543212 is a wasteful number, since it uses less digits than its factorization.

1205543212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2667248 (or 2667246 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 1205543212 is about 34720.9333399896. The cubic root of 1205543212 is about 1064.2923177362.

Adding to 1205543212 its reverse (2123455021), we get a palindrome (3328998233).

The spelling of 1205543212 in words is "one billion, two hundred five million, five hundred forty-three thousand, two hundred twelve".